Answer:
E) Animalia
Explanation:
An animal is the only organism that lacks a cell wall and cannot produce its own food out of those.
The multicellular eukaryotic organism that lacks cell walls and is a heterotroph belongs in the kingdom Animalia.
Explanation:The multicellular eukaryotic organism that lacks cell walls and is a heterotroph belongs in the kingdom Animalia. Kingdom Animalia includes all animals, from insects to mammals, which are multicellular, eukaryotic, and heterotrophic organisms. They are characterized by their ability to move, their complex organ systems, and their lack of cell walls.
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Carbon atoms can form (2 points):
a. one double covalent bond
b. two triple covalent bonds
c. four single covalent bonds
d. three double covalent bonds
Answer:
C. four single covalent bonds
Explanation:
Carbon atoms can form four single covalent bonds.
Four single covalent bonds a carbon atoms can form.
Four electrons are available for bonding with other atoms and so it shows a valency of four to complete the octet.What are covalent bonds?A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electro negativities of two atoms is too small for an electron transfer to occur to form ions.
What are atoms?An atom is the basic building block of chemistry. It is the smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element.
Hence, C option is correct.
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polar bear have small ears because
Answer:
The polar bear's small ears and tail offer less surface area than large ears or tails, and help maintain body warmth. Fat. Polar bears have a layer of fat that can be four inches (10 cm) thick. Although their fur is the primary source of insulation, the fat helps keep heat in as well.
Polar bears have small ears to minimize heat loss in their cold Arctic habitat, complemented by thick fur and blubber for insulation.
Polar bears (Ursus maritimus) have small ears as an adaptation to their Arctic ecosystem. The small size of their ears serves to minimize heat loss in an environment where maintaining body temperature is critical. Large-eared animals, like elephants, need to disperse heat due to their small surface-to-volume ratio, but for polar bears, conserving body heat is more important.
This is similar to why you wouldn't find animals like wild mice, which are small and lose heat quickly, living in the poles. Additionally, polar bears have developed thick fur and a dense layer of blubber under their skin to further reduce heat loss and maintain a warm body temperature amidst icy conditions.
To power the activities of the cell,
which of the following do cells use
cellular respiration to acquire?
A. energy
B. water
C. oxygen
PLZ HELP SOON
The activities of the cell are powered by cellular respiration which is the final process of the metabolic pathway to generate energy, in this oxygen acts as a final electron acceptor, hence option C is correct.
What is the process of cellular respiration?Cellular respiration is the metabolic process in which all the electrons, are finally moved into the electron transport system which generates the energy in the form of ATP.
Glucose, protein, and fatty acids are catabolized to give energy by the oxidation process, this oxidative breakdown produces electrons and protons which finally produce an electromotive force to produce ATP.
Oxygen is the final electron acceptor in this process, in some cells if oxygen is not present, another substrate acts as a final electron acceptor, but produces less amount of energy.
Therefore, option C is correct.
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Final answer:
Cells use cellular respiration to acquire energy by converting carbohydrates and oxygen into ATP, the principal energy carrier within the cell. The correct option is A.
Explanation:
To power the activities of the cell, cells use cellular respiration to acquire energy in the form of adenosine triphosphate (ATP). ATP serves as the principal energy carrier within the cell. During the process of cellular respiration, cells convert biomolecules like carbohydrates into energy. The carbohydrates react with oxygen, which is an essential reactant in this process, and as a result, carbon dioxide and water are produced alongside ATP. The ATP produced is then utilized to fuel various cellular functions, serving as the energy currency of the cell. It's crucial to understand that although oxygen is required for aerobic respiration, ATP can also be produced in the absence of oxygen through anaerobic processes like fermentation.
Which is a disaccharide ?
Answer:
The common disaccharides are sucrose, lactose, and maltose.
Explanation:
Disaccharide is one type of carbohydrate. It is a simple sugar like glucose. The two monosaccharides link together to form a disaccharide. The monosaccharides combine with a glycosidic bond. These are soluble in water and sweet in taste. The most common disaccharide are sucrose, lactose, and maltose. The sucrose is the common table sugar and form by mixing glucose and fructose. Lactose is present in the milk. It is formed by combining glucose and glucose. Maltose is formed by glucose and glucose.
A disaccharide is a carbohydrate composed of two monosaccharides bonded together during a dehydration synthesis. Familiar examples include sucrose, lactose, and maltose, which each have important roles in biological systems.
Explanation:A disaccharide is a type of carbohydrate that's made up of two simple sugars (monosaccharides) linked together by a covalent bond. Examples of disaccharides include sucrose (table sugar), lactose (milk sugar), and maltose (malt sugar). The bond that holds them together is formed during a dehydration synthesis, a chemical reaction that removes a molecule of water.
For instance, we're all familiar with sucrose, which is made by combining the monosaccharide glucose and fructose. Once these sugars combine, they form a new compound with properties distinct from their constituent parts. Hence, the concept of disaccharides is integral in understanding biological systems, particularly digestion and energy production.
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Which of the following is false of the integumentary system? A. Too much UV radiation can mutate DNA in skill cells and cause cancer B. The body produces more melanin with stronger sunlight exposure C. The inner layer of the epidermis divides quickly D. Keratin is the pigment responsible for skin color
The statement which is false about the intergumentary system is option D. "Keratin is the pigment responsible for skin color."
Even though the skin color of human beings is affected y different substances, the pigment melanin is responsible for it. Melanin is produced within the skin in cells known as melanocytes and it determines of the skin color of darker-skinned humans.
For instance, the skin color of those who have light skin is determined primary by the bluish-white connective tissue placed beneath the dermis and by the hemoglobin which circulates in the veins of the dermis.
The statement that is FALSE about the integumentary system is that "Keratin is the Pigment responsible for skin color"
Further Explanation:Integumentary systemIt is one of the organ system whose functions includes regulating body temperature, retaining body fluids, eliminating waste products and also protecting the body against disease causing pathogens.
Integumentary system is composed of the skin, glands, hair, nails, and nerves.
The SkinIt is the largest organ in the body and the main part of the integumentary system.
The Skin is made up of three layers;
The Dermis The Epidermis The Hypo-dermis The EpidermisThis is outermost layer of the skin with dermis and hypodermis underneath it.
The epidermis covers the whole body and protects the deeper layers of the skin from external environment and mechanical damage.
Specialized cells of the SkinEpidermis contains some specialized cells that helps in the functioning of the skin.
These cells include;
Melanocytes
They are specialized cells which make a pigment known as melanin. The pigment is responsible for the protection of the skin from dangerous ultra-violet rays from the sun.
Keratinocytes
They are other specialized cells that give rise to a protein known as keratin.
Protein keratin is responsible making the skin tough and water-resistant
Langerhans cells
These are specialized cells whose role is detecting and fighting pathogens that may try to enter the body through the skin.
Merkel cells
Merkel cells are specialized cells that take part in sense of touch.
Keywords: integumentary system, epidermis, dermis, hypo-dermis, specialized cells, keratinocytes, kleratin, melanocytes, melanin, Langerhans cells, Merkel cells.
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Function of the integumentary system: https://brainly.com/question/1511444
Epidermis of the skin: https://brainly.com/question/11454547
Keratin: https://brainly.com/question/4435311
Melanin: https://brainly.com/question/9990924
Level: High school
Subject: Biology
Topic: Organ system
Sub-topic: Integumentary system
What type of food does Nemo eat?
Clownfish are omnivores so they eat meat and plants.
Answer:
They're omnivorous and they also it excretions from the anemone they live in, algae and zooplankton.
Explanation:
Nemo is a clownfish, as his species is commonly known. He has an omnivorous diet and some aspects of this diet stand out a bit, such as the fact that it eats feces from the anemone with which the it has a mutualism relationship with.
His diet also consists of zooplankton, larvae and algae.
Hope it helped,
BiologiaMagister
How do the light and dark reactions work together?
A. The dark reactions provide energy carriers for the light reactions.
B. The light reactions provide photons for the dark reactions.
C. The dark reactions provide photons for the light reactions.
D. The light reactions provide energy carriers for the dark reactions.
Answer:
The light reaction provides the dark reaction with nutrients, which is ATP.
In short, the answer is D:
The light reactions provide energy carriers for the dark reactions.
The light reactions provide energy carriers for the dark reactions. The correct option is D.
What is light and dark reaction?The light reaction is the first stage of photosynthesis, in which light energy is trapped to produce ATP and NADPH.
The dark reaction is the second stage of photosynthesis, in which energy from ATP and NADPH is used to produce glucose.
Thus, the correct option is D.
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What type of cell reproduction has gametes?
Final answer:
Gametes have the type of cell reproduction known as sexual reproduction. They are produced through meiosis and unite through fertilization to form a diploid cell called a zygote.
Explanation:
Sexual reproduction involves two parents, and in this type of reproduction, gametes are produced and unite to form an offspring. Gametes are haploid cells that contain half the number of chromosomes found in other cells of the organism. Gametes are produced through a type of cell division called meiosis. The process in which two gametes unite is called fertilization, resulting in the formation of a diploid cell called a zygote.
According to the RNA world hypothesis, RNA acted as the genetic material and catalyzed reactions in ancient cells. What conclusion can you draw from this?
Answer:
This implies that DNA and proteins evolved after RNA.
Explanation:
It is believed that RNA predated today's cells in evolutionary history. RNA existed as the genetic material of the primitive cells of the time that were mainly constituted of globules of fat oil suspended in water in the oceans and lakes. Even in cells today, RNA molecules themselves can act as catalysts such as in the case of peptidyl transferase reaction that takes place on the ribosome.
The RNA world hypothesis suggests that RNA was the precursor to modern life, serving as both genetic material and a catalyst for biochemical reactions in primitive cells, with the discovery of ribozymes supporting this theory.
The RNA world hypothesis focuses on the concept that RNA was the original biomolecule at the forefront of cellular life, functioning as both genetic material and a catalyst for chemical reactions. This leads to the conclusion that, before DNA and proteins took over these roles, RNA molecules might have formed the basis of primitive life forms, storing genetic information, and facilitating metabolic processes. The discovery of ribozymes, or catalytic RNA molecules, supports this hypothesis, suggesting RNA's central role in early biological evolution. In modern cells, RNA still plays a critical part in genetic regulation and processing, with ribosomes, the cell's protein-synthesis factories, leveraging RNA's catalytic capabilities.
Which statement about DNA replication is true?
A.
Eukaryotes can only replicate one segment of a chromosome at a time.
B.
Prokaryotes can only replicate their single circular chromosome in the nucleus.
c.
Prokaryotes only have one origin of replication to initiate replication.
D.
Eukaryotes only have one circular chromosome that unwinds at multiple locations
Answer:
C. Prokaryotes only have one origin of replication to initiate replication
Which of these statements about water is true? Which of these statements about water is true?
Its atoms share electrons equally.
It can dissolve all known substances.
Its molecules are farther apart in the solid state than in the liquid state.
It has a lower specific heat than nearly all known metals.
Answer:
Its molecules are farther apart in the solid state than in the liquid state.
Explanation:
Unlike most other liquids that reduce in volume with decrease in temperatures, when water goes below 4 degrees centigrade, the volume begins to increase. This is due to the way the water molecules arrange themselves in ice. Water molecules are polar and align themselves with regards to their dipoles. The partially positive hydrogen ends tend to place themselves some distance between two partially negative oxygen ends of the adjacent molecules. This pushes the molecules farther apart in crystalline (solid) form than in liquid form.
Among the provided options, the statement 'Its molecules are farther apart in the solid state than in the liquid state' is true. This is because when water freezes to become ice, the water molecules are forced to be spaced farther apart, forming a crystalline structure.
Explanation:The statement 'Its molecules are farther apart in the solid state than in the liquid state' is the correct answer. Water molecules are indeed closer together in the liquid state due to the polarity and hydrogen bonds between them. When water freezes to become a solid (ice), however, a crystalline structure is formed that forces the water molecules to be spaced farther apart. Hence, the density of ice is lower than liquid water, causing ice to float on water.
This property of water is rather unique as most substances are denser in their solid state than in their liquid state.
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Which of the following situations could result in divergent evolution in sympatric populations?
Select all that apply.
A mutation has resulted in some individuals of a plant species flowering early in the spring, while other members of the same species flower much later.
A volcano splits the range of a species of insect into two parts that do not overlap, and insects on opposite sides of the volcano can no longer interbreed.
A mutation during reproduction causes the chromosomes in a species of flowering plant to double, resulting in an individual with four sets of chromosomes.
A seed from a plant is carried by a bird to an isolated island where it can grow and reproduce but is too far away from its original population to interbreed with them.
Answer:
The Other guy is wrong the answer is
A mutation has resulted in some individuals of a plant species flowering early in the spring, while other members of the same species flower much later.
A mutation during reproduction causes the chromosomes in a species of flowering plant to double, resulting in an individual with four sets of chromosomes.
I hope this help for the future people Biology stinks.
Explanation:
Which of the following is a product of science a basket weaving b modern bananas c singing d Astrology
Answer:
d
Explanation:
because all answer it isn't false
Answer: b. modern bananas
Explanation:
Science is a discipline which is based upon the study of the natural world on the basis of the facts and data obtain after the experimental trials and associated observations. Fields of scientific study includes biology, physics and chemistry.
Modern bananas is the product of science as it can be composed or constructed by using the knowledge of science and associated technology.
Complete the following analogy. Brain is to body as_____ is to cell.
Answer:
i think the answer i s mithocondira
Explanation:
the mithocondria is the powerhouse of the cell
Complete the following analogy. Brain is to body as_____ is to cell.
tissue
Which of the following best describes a weak base?
O
A. It only partially dissociates and produces OH ions in water.
O
B. It dissociates completely and produces Htions in water.
O
c. It dissociates completely and produces OH ions in water.
O
D. It only partially dissociates and produces t ions in water.
The base is defined as the substance that can accept the electron pair and reacts with acids to form water and salt.
The correct answer is:
Option A. It only partially dissociates and produces OH ions in water.
Weak base can be defined as:
Weak base refers to the base that does not dissociate completely in the water.The resultant water solvent will have a partial or small proportion of hydroxide ions.Examples of weak bases are ammonia, ferric hydroxide, lead hydroxide, and copper hydroxide.
Thus, the weak base is the base that partially dissociates OH ions in water.
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13. Some people use genetic testing before becoming pregnant to find out whether
A. their child is likely to have Down syndrome,
B. they're able to become pregnant,
C. their child is likely to be tall.
D. they're carriers of a genetic disorder,
Answer: D. they're carriers of a genetic disorder,
Explanation:
Genetic testing also known as testing of the genetic material which is DNA in humans so as to determine the diseases and disorders associated with bloodline relatives of a single individual. It studies the pedigree chart of the family of the person under consideration for this test.
It is done before becoming pregnant or the couple desire to have a child naturally. Both parents are tested and their family history of diseases and disorders is also examined so as to know the possibilities of transmission of the diseases and disorders they inherited may also get passed on to the children.
What type of molecule is fat?
Answer:
well lipids are fatty acids but they often refer to lipids as fat (macromolecule or a polymer)
Explanation: I'm a biology student
The problematic model of the universe describes the earth as
Answer:
The Ptolemaic model of the universe describes the earth as at the centre,stationary with planets that rotate around it
a race car driver drives one lap around a track that is 500 meters in length. what is the drivers displacement at the end of the lap?
Answer:
0 meters
Explanation:
When we talk about displacement, think that the think of it as the measure of the distance between the starting point of the object, from its end point.
Since we are talking about a lap around a track, it would mean that the starting point is also the end point. So if you started and end at the same point, the distance between it would be 0.
The digestive system is an example of what level of organization
Level 4: Organ Systems
One example is the digestive system, which is made up of many organs that work together to digest and absorb nutrients from food.
What is an example of an organ system level of organization?The organ level of organization is when two or more tissues work together for a specific function. For example, the bladder consists of an inner lining of epithelial tissue, bound by various connective tissues to (smooth) muscle.
Is the organ system at the organization level?
The major levels of organization in the body, from the simplest to the most complex are atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
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Final answer:
The digestive system is an example of the organ system level of organization, where multiple organs like the stomach and intestines work together to digest food and absorb nutrients.
Explanation:
The digestive system is an example of an organ system level of organization. An organ system consists of multiple organs working in concert to perform complex functions necessary for life. In the case of the digestive system, organs such as the stomach, pancreas, liver, gallbladder, small intestine, and large intestine work together to break down food into nutrients that can be absorbed into the bloodstream, as well as to eliminate waste.
The human body is organized into several levels, and the organ system is one such level. According to the major levels of organization from most to least complex, we have the human body at the top, followed by organ systems like the digestive system, then tissues such as muscular tissue, and finally, individual cells.
What is the most likely niche partitioning mechanism for the four Mpala herbivores? Support your claim with evidence.
The most likely niche partitioning mechanism for the four Mpala herbivores is diet differentiation through DNA metabarcoding studies which reveal specific dietary preferences, facilitating coexistence and reducing competition.
The most likely niche partitioning mechanism for the four Mpala herbivores is diet differentiation. Each herbivore species likely consumes different types of plants or parts of plants, thereby reducing direct competition for resources. For example, one herbivore may specialize in eating grass while another focuses on browsing leaves from trees.
Niche partitioning through diet differentiation can be supported by DNA metabarcoding studies like the one conducted by Kartzinel et al. (2015) which reveal specific dietary preferences of different herbivore species.
This mechanism allows the Mpala herbivores to coexist in the same ecosystem by utilizing different food resources, ultimately reducing competition and promoting species diversity.
The most likely niche partitioning mechanism for Mpala herbivores is dietary differences, supported by DNA metabarcoding data showing distinct diets. This minimizes competition and enables coexistence.
The four herbivores in Mpala, Kenya, divide their niches primarily based on their diets. Kartzinel et al. assert that (2015), DNA metabarcoding data show that even though these herbivores live in the same habitat, they eat different things. For example, a few animal varieties could principally devour grasses, while others center around bushes or trees, lessening direct rivalry for food assets. The division of their niches is further aided by temporal and spatial factors. Some herbivores, for instance, might forage in different parts of their habitat or eat at different times of the day. These herbivores are able to coexist by minimizing competition thanks to the combination of dietary, temporal, and spatial niche partitioning. Loveridge and Moe (2004), among other significant studies, point out that browsing hotspots play a role in these patterns by providing a variety of feeding opportunities for various plant species in various locations.which questions could be answered using the scientific process
Answer:
Scientific questions or the questions that are based on reasoning, measurements and observations can be answered using the scientific process.
Explanation:
If we talk about scientific question, it means that is it something which can be answered through reasoning and experimentation. For example: How did the life originate on earth? What is present underneath the earth?
Scientific process is a schematic process used to answer scientific or logical questions. In scientific process, one tries to answer the question by making an observation, then doing a proper research on that observation, followed by hypothesis, analysis of the data obtained and drawing the conclusions from the analysis.
A scientific question must be answerable through this process otherwise it donot fulfills the criteria of a scientific question. For example: Is the dress of an actor nice? this is not a scientific question because it cannot be measured and answered in a logical way. On the other hand there is a question,’what is the effect of plastic bags on health of water bodies ’’ this is a scientific question that can be answered after proper research and experimentation.
Hope it clears.
what makes a fossil an index fossil?
a. The fossil comes from an animal that did not evolve.
b. The fossil does not contain any traces of DNA.
c. The fossil cannot be dated using radioactive dating.
d. The fossil was formed only during a certain short time period.
.Answer:
D) The fossil was formed only during a certain short time period.
Explanation:
Index fossils are any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environmentFossils can tell you a lot about the rock they're found in, and index fossils are used to used to define periods of geologic timeFossils are the impression of the dead remains of plants and animals. A fossil is called an index fossil when it was formed only during a certain short period. Thus, option d is correct.
What is an index fossil?An index fossil remains and a cast of the animals and plants embedded in the rock layers for a particular period in geological time. They are abundant and widely distributed over geographical places. They can be used to determine similar time in various geographic locations.
Therefore, the index fossils were formed only during a certain short time period.
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which does most of the work of the endocrine system APEX
Answer: A compound called a hormone released by an endocrine gland.
Explanation:
The endocrine chemicals and hormones move through the body via blood vessels to the cells. The endocrine system impacts other systems of the body: the nervous system, the circulatory system and the digestive system to make it possible to regulate body functions such as growth, body temperature, digestion and glucose metabolism.
Describe the process of decomposition.
Answer:
The process by which organic substances are broken down into simpler organic matter. The process is a part of the nutrient cycle and is essential for recycling the finite matter that occupies physical space in the biosphere.
Explanation:
13. The walls of arteries include a
____ muscle layer.
voluntary
smooth
cardiac
skeletal
Answer:
smooth
Explanation:
The walls of arteries include a smooth muscle layer.
Answer:
smooth
Explanation:
Arteries are blood vessels that guarantee the transport of blood from the heart to the different tissues of the body, thus allowing the supply of oxygen and nutrients to all cells. These vessels are quite resistant and have some characteristics that allow them to be distinguished from other blood vessels. In addition, the artery walls are composed of three layers that differentiate between themselves. One of these layers appears as a smooth muscle layer.
what is directly responsible for matter moving and changing inside an animal body
Answer:
Energy
Explanation:
Energy is directly responsible for matter moving and changing inside an animal body.
Answer:
Energy
Explanation:
Energy is primarily responsible for all sorts of transformation of matter in and outside a body.
A food contains energy , that a plant has entrapped by converting solar energy into chemical energy. . When this food enters into the body, body tries to use this chemical energy for all its metabolic processes in the form of nutrients.
Hence, a food entering body through mouth is acted upon by various physical process such as churning, chewing, diluting, grinding etc. and chemical processes such as enzyme action , acid and base reaction to transform this chemical energy in food into usable form.
Asexual reproduction is also called _____.
Answer:
we hv different synonyms for asexual reproduction
Explanation:
1.Virgin birth
2.sporulation
3.agamogenesis
4.apomixis
5.fission
and so on
Answer:
Asexual reproduction is also called mitosis.
Explanation:
Can two snakes have a baby turtle? Can two turtles have baby alligators? Of course not. The ability to produce exact or close copies of the original organism is important for the continuation of life. Reproduction is an important characteristic of all living organisms. Most unicellular organisms reproduce by a type of asexual reproduction called mitosis. During mitosis, a single parent cell splits into two identical daughter cells. Multicellular organisms, on the other hand, usually reproduce sexually. A female egg is united with a male sperm during fertilization. The new organism that grows from this union has half of the father's genes and half of the mother's.
How is mitosis different in plants and animals
Answer: It is different in all micro organisms
Explanation:
Answer:
In animal cell, centrosome is required and in plant cell it is not essential.
Explanation:
The plant cell remains same before mitosis but animal cell changes its shape to round. The cytokinin is responsible for cell division in plants and in animal cell no specific hormone is known. The plant cell do not use microfilaments whereas animal cell use them for cytokinesis.
The plant cell division takes place in meristems and in animal it takes place in bone marrow.
Which of the following describes the second law of thermodynamics?
Matter is neither created nor destroyed
All natural processes tend to move toward disorder.
Energy is neither created nor destroyed
none of the above
Answer:
None of the above....its the ability to do work
Explanation:
Final answer:
The second law of thermodynamics states that 'All natural processes tend to move toward disorder,' corresponding to the increase of entropy or disorder in an isolated system. This principle is distinct from the first law of thermodynamics, which concerns the conservation of energy.
Explanation:
The second law of thermodynamics is best described by the statement that 'All natural processes tend to move toward disorder.' This principle implies that in any given process, the total entropy (a measure of disorder) of an isolated system never decreases, although it can increase. Therefore, the correct answer to the student's question is 'All natural processes tend to move toward disorder.'
This law explains why energy transfers are not 100% efficient; some energy is always transferred into a less useful form, like heat, thereby increasing the overall disorder of the system. It is this increase in entropy that drives the direction of natural processes and makes certain processes, such as heat flowing spontaneously from a cooler object to a warmer one, impossible.
It is important to note that the statement 'Energy is neither created nor destroyed' refers to the first law of thermodynamics, which deals with the conservation of energy, not the increase of disorder.