In the comparison of temperatures, -187°C is colder than -168°C, as numerically lower temperatures on the Celsius scale represent colder conditions.
The question at hand is which temperature is colder, -187°C or -168°C. In terms of temperature measurement, a lower number indicates a colder temperature. Thus, directly comparing the numbers, -187°C is colder than -168°C because the value -187 is smaller (or lower) than -168 on the Celsius scale. Furthermore, the subject of temperature ties into the concept of the Kelvin scale, which is an absolute thermodynamic temperature scale with its zero point at absolute zero, the theoretical coldest possible temperature.
When you place a ball at the top of a hill and it accelerates toward the bottom
of the hill, it probably also experiences both
and
O
A. sliding friction, rolling friction
O
B. rolling friction, air resistance
O
c. sliding friction, air resistance
O
D. rolling friction, sliding friction
Answer: rolling friction, air resistance.
Explanation:I just took the test on apex
Answer:
Rolling Friction and Air Resistance
Water has many unique properties attributed to its polarity. Which correctly pairs the water property with a correct example of the property. A) A solid (ice) is more dense than a liquid (water) so it sinks. B) Surface tension is caused by the cohesion or "stickiness" of water molecules. C) Due to cohesion, water is the universal solvent, dissolving most nonpolar substances. D) Due to water's high specific heat, the temperature of water rises and falls very quickly allowing bodies of water to moderate air temperat
Answer:
b
Explanation:
because i said so
Answer:
Option B, Surface tension is caused by the cohesion or "stickiness" of water molecules.
Explanation:
The water molecules have a unique property of attracting each other resulting into surface tension. Hence option B is correct
Option A is incorrect because solid water i.e ice is 9 % less dense than the liquid water and hence it floats on water
Option C is incorrect because water is considered as a good solvent because of its polarity .
Option D is incorrect because water takes time to get heated due to its high specific heat.
What mass of water in grams will fill a fish tank 100 cm long, 50 cm wide, and 30 cm high?
Answer:
150,000cm^3, or 1,500m^3
Explanation:
The question is basically asking the volume of this rectangular tank.
The formula to find the volume is length x width x height.
This is because we're trying to find the area of the base (length x width), and then we're multiplying the base times the height, to get how much of the base area can fit in the height of the rectangle.
So, the answer is 100cm x 50cm x 30cm = 150,000cm^3, or 1,500m^3, because 1 meter = 100 centimeters.
Explain what would happen to the population of wolves if
a) A sudden frost were to kill many green plants in this food web?
Answer: the wolves would starve
Explanation:
the grass fed the deer, rabbits, etc they fed on. The deer, rabbits, etc would stave. The wolves have less food and decrease in population.
What atoms make up sugar molecules, amino acids, and fatty acids?
Sugar molecules make up carbohydrates, amino acids are responsible for protein and fatty acids are makeup lipids or fats.
Sugar molecules are simple carbohydrates called monosaccharides and are structural units of all the carbohydrates by link with one another like a chain. The three important sugar molecules are Glucose, fructose, and galactose provide nutrition.
Amino acids are hundreds or thousands of smaller units that bind with one another in a chain-like structure called a polypeptide chain that is a form of Proteins. There are 20 types of amino acids that link together in a different sequence to form various proteins.
Fatty acids are a straight chain of an even number of carbon atoms, smaller units of lipids or fatty acids that binds in huge number with one another.
All three are the essential for nutrition of organisms, therefore, the correct answer is -carbohydrates, protein, and lipids.
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Final answer:
Sugar molecules, amino acids, and fatty acids all contain carbon, hydrogen, and oxygen. Sugars have a ring structure, amino acids a central carbon with an amino group, carboxyl group, and R group; and fatty acids a carbon chain with a carboxyl group.
Explanation:
Sugar molecules, amino acids, and fatty acids are all vital biological molecules composed of carbon, hydrogen, and oxygen atoms. Sugars like glucose have a ring structure with multiple hydroxyl groups, amino acids have a central carbon atom (alpha carbon) bonded to an amino group (NH₂), a carboxyl group (COOH), a hydrogen atom, and a variable R group which defines the amino acid. Fatty acids are long chains of carbon atoms with a carboxyl group at one end. Each type of molecule plays a crucial role in the structure and function of living organisms.
Fatty acids differ slightly because they aren't linked together in long chains like proteins or polysaccharides, but rather, they are commonly found in groups of three attached to a glycerol molecule to form triglycerides, which are a type of fat.
The invention of which instrument allowed scientists to discover cells?
a. eyeglasses
b. magnifying glass
c. microscope
d. telescope
The invention of microscope allowed scientists to discover cells.
As a microscope we call an instrument that is used for the observation of objects too small (such as cells) to be seen with the naked eye.
The microscope is an optical instrument that increases the capacity of observation to levels of close-up such that it even makes possible the analysis of particles.
This instrument was invented by Zacharias Janssen in the year 1590.In 1665, the research carried out by William Harvey on blood circulation appeared, by analyzing blood capillaries.From then on, technical progress has been made by increasing the magnification level of microscopes, and this in turn, making the study of cells possible. In the middle of the 20th century, the invention of the electron microscope made it possible to know the three-dimensionality of cell structures and the spatial distribution of the molecular components within them.Therefore, we can conclude that the invention of microscope allowed scientists to discover cells.
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A gene in DNA is the code for
Answer: Genes tell the body how to behave in certain ways, so there are genes that represent particular characteristics, and lack of genes or changes in them can lead to diseases and problems in the body.
Explanation:
Explain what would happen to the population of frogs if:.
a) Grasshoppers were to be killed by an insecticide? (2 marks)
The killing of grasshoppers by an insecticide would likely lead to a decline in the frog population due to decreased food availability, with potential ecosystem-wide effects. Frogs might suffer from nutritional shortages and be forced to seek out less suitable food sources, affecting their reproductive success and survival.
If grasshoppers were to be killed by an insecticide, we could predict several effects on the population of frogs that feed on these insects. First, the immediate availability of food for frogs would decrease, potentially leading to a decline in their numbers due to starvation or poor nutrition. This could put pressure on the frogs to find alternative food sources, which might not be as nutritious or abundant as grasshoppers. Additionally, the loss of grasshoppers could disrupt the local ecosystem since grasshoppers often play a role in plant pollination and the cycling of nutrients. The ecosystem dynamics could shift, causing further indirect effects on the frog population and other species within the food web. If grasshoppers are a significant food source, the decrease could directly affect frogs' reproductive success and survival rates, potentially leading to their population decline.
What is the most likely explanation of the data shown below?
Year Dark moths Light moths
50% 50%
599
4196
68%
324
8096
2096
95%
10096 0%
NO
a. There has been a drought in the area that is affecting all life forms.
b. The population of natural predators of the moths has gotten smaller.
c. The moths are living in an environment with light trees.
d. The moths are living in an environment with dark trees.
Answer:
D) The moths are living in an environment with dark trees.
Explanation:
Answer:
Option D
Explanation:
The dark colored moths are increasing with time. This clearly indicates that the dark colored moths are able to save themselves from the predators. The predators of moth identify them only by the contrasting color of the moth and its habitat. Moths live on trees. Thus, if dark colored moths are able to survive, they might be living in habitat which could make them untraceable. Hence, it is obvious to say that dark colored moths are living on dark trees. Also the light colored moths are living on dark trees and this is the reason why they are easily identified and killed by the predators.
Thus, option D is correct
Describe how the branches on a cladogram show the relationships among organisms.
Answer:
relationships among organisms and evolutionary relationships for organisms with a shared common ancestor.
Final answer:
Cladograms use branches to show evolutionary relationships by illustrating how species diverged from common ancestors, with nodes representing the emergence of new traits.
Explanation:
The branches on a cladogram illustrate the evolutionary relationships among organisms by showing how groups of organisms diverged from common ancestors over time. Each branch or node represents a point where a new trait emerged, distinguishing one group from others, thereby forming a new clade. The length of the branches can indicate the amount of molecular changes that have occurred over time. As organisms evolve, they might acquire unique traits that set them apart from their ancestors, and these traits can also be represented on the cladogram.
For instance, in a cladogram that includes mammals, reptiles, and birds, the reptile clade includes birds, indicating that birds evolved from reptiles, contradicting the separate classification by Linnaeus. By observing the branching patterns and the traits at each node, we can interpret phylogenetic relationships and hypothesize how different species are related by descent.
What is the first step of the Calvin-Benson cycle?
ATP and NADPH combine to make G3P.
G3P is used to make glucose and other
compounds.
ATP and G3P combine to make RuBP.
Carbon dioxide and RuBP combine to make PGA.
The first step of the Calvin cycle is the combination of carbon dioxide with RuBP to produce PGA. This step is catalyzed by the enzyme RuBisCO and is the initial act of carbon fixation in the photosynthetic process of converting atmospheric carbon dioxide into glucose.
Explanation:The first step of the Calvin-Benson cycle, also known simply as the Calvin cycle, involves the enzyme RuBisCO fixing carbon dioxide to a five-carbon molecule called ribulose biphosphate (RuBP). This reaction produces two molecules of 3-phosphoglycerate (PGA). Therefore, the correct first step of the Calvin-Benson cycle is: Carbon dioxide and RuBP combine to make PGA.
The Calvin cycle is a process of photosynthesis where ATP and NADPH, produced in the light-dependent reactions, provide the energy to convert carbon dioxide from the atmosphere into organic compounds like glucose. Throughout the cycle, the energy is used to regenerate RuBP, allowing the cycle to prepare for more carbon fixation and continue the process of photosynthesis.
A process used by plants to convert light energy into
food energy is
Answer:
In photosynthesis plant convert light energy to food(glucose)using co2,water and in the presence os chlorophyll.
Explanation:
If you look at the sky and see the Moon as
a half-circle, what do you expect should be
true about the tides that day?
A. The low tides will be much lower than
usual.
B. The high tides will be much higher
than usual.
C. There will be no tides that day.
D. There will be little difference between
low and high tide.
Answer:
answer is Bthe high tides will be much higher than usual
Decide what is meant by the statement “science is not limited to the laboratory “?
Answer:
Science is not limited to the laboratory because it has done in a laboratory to study the physical, chemical and biological aspects of the natural system. It mean that science presents everywhere and happening at all times. It also mean that anyone can become a scientist and they can conduct the experiments with the data and a hypothesis.
Explanation:
Science is the study of the physical, chemical, biological, and mathematical study of nature. The science is studied in laboratory conditions to validate the various reaction and principles occurring in natural systems.
In a laboratory, small system or model is made to study the particular aspect of a large system. Thereby, science in the laboratory helps to find out the science of the actual world. Various principles, machines and designs are inspired by the natural systems.
Describe the genotype ration for their offspring
Answer: The Genotypic Ratio describes that the number of times a genotype would appear in offspring after a test cross. Take this for example. A test cross that is between two organisms with the SAME Genotype, Rr, for a Heterozygous dominant trait, it will result in the offspring with the Genotypes...RR, Rr, & rr. This is also a ratio that of all possible gene combos that are all based on the alleles, they are contributed with their parents. We don't really often see this Genotypic ration when we look at an organism, we only see the results of its affects.
I hope this helps you!
Relate Locard's Principle of Exchange to trace fiber evidence.
Answer:
Person to person contact, person to item contact, direct transfer and secondary transfer
Explanation:
Final answer:
Locard's Principle of Exchange states that contact between two objects always results in an exchange of materials, which in forensic science is used to link suspects to crime scenes or victims through trace fiber evidence.
Explanation:
Locard's Principle of Exchange is crucial in forensic science. It states that when two objects come into contact, there is always a transfer of material. When relating this to trace fiber evidence, it implies that fibers from a suspect's clothing may be transferred to a victim or crime scene, and vice versa. This trace evidence can be collected and analyzed to establish a connection between individuals and locations involved in a crime. Therefore, just as particle exchange signifies the transfer of elementary particles between entities, the transfer of fibers is evidence of physical contact in a legal context, embodying the principles set forth by Edmond Locard.
1. What is the usual cause of a harmful increase in the nutrients in a freshwater lake?
a. Global Warming
b. Runoff of fertilizers and sewage
c. Loss of biodiversity
d. Seasonal variations in rainfall.
Answer:
B
Explanation:
Which of the following describes a medical drug
Assuming A.L,
Which of the following describes a medical drug?
A) A bacterium that causes a human disease
B) A virus that is passed from person to person
C) A physiological symptom related to a sickness
D) A chemical substance used to treat disease
The correct answer is D) A chemical substance used to treat disease.
A chemical substance used to treat disease.
A medicine (also called medicament, medicinal drug, pharmaceutical drug, remedy, or definitely drug) is a drug used to diagnose, remedy, deal with, or prevent sickness.
What are the 7 types of drugs?Central Nervous System (CNS) Depressants. CNS Stimulants. Hallucinogens. Dissociative Anesthetics. Narcotic Analgesics. Inhalants. Cannabis.Learn more about medical drugs here https://brainly.com/question/26254731
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what does the chloroplast produce during the light independent reactions of photosynthesis?
a. NADPH molecules
b. ATP molecules
c. carbohydrate molecules
d. chlorophyll molecules
Answer: c.- Carbohydrate molecules
Explanation:
-The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes.
-These reactions use the ATP and NADPH synthesized during the exergonic light-dependent reactions to provide the energy for the synthesis of glucose and other organic molecules from inorganic carbon dioxide and water.
Name the 4 types of bonds carbon can form
Answer:Single, double, triple, and quadruple form
Explanation:
If you were to place the bear into the energy pyramid, the bear would go on level _____ and have ________ amount of energy available to it.
Answer:
The greatest in the first blank
the least in the second blank
Explanation:
In the energy pyramid, bears would be placed as tertiary consumers (or higher) and would have about 10 percent of the energy available from the trophic level below them, which is considerably less than what is available at the base of the pyramid.
If you were to place the bear into the energy pyramid, the bear would go on level tertiary consumer (or higher, depending on the specific diet of the bear) and have approximately 10 percent of the energy available to it from the level below.
Bears are typically classified as omnivores or occasionally as carnivores, depending on their diet. Assuming that producers in this pyramid have 1,000,000 kilocalories of energy, primary consumers would have 10 percent of that, which is 100,000 kilocalories. Since energy transfer between trophic levels is about 10 percent, the energy available to secondary consumers would be 10,000 kilocalories (10 percent of primary consumers), and the tertiary consumers would have approximately 1,000 kilocalories available to them (10 percent of secondary consumers). Bears, being tertiary consumers or sometimes quaternary when consuming other carnivores, would fall into the category with significantly less energy availability compared to the bottom of the pyramid.
What results from the oxygen atom being at one end of a water molecule and the hydrogen atoms being at the other end?
Answer:
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
Explanation:
Final answer:
The water molecule's polarity results from the oxygen atom having a partial negative charge and the hydrogen atoms a partial positive charge, leading to unique properties like hydrogen bonding and high boiling and melting points.
Explanation:
The arrangement of two hydrogen atoms and one oxygen atom in a water molecule leads to a molecular geometry where the hydrogen atoms are on one side and the oxygen atom is on the other. This geometry creates a polar molecule due to the uneven distribution of electronic charge. Oxygen is more electronegative, meaning it has a greater ability to attract electrons towards itself, resulting in a partial negative charge on the oxygen end, while the hydrogen ends hold a partial positive charge.
Because of this separation of charges, the water molecule has a net dipole moment, with the dipole pointing from the hydrogen atoms towards the oxygen atom. This dipole-dipole characteristic gives water its unique properties, such as its ability to dissolve many substances and its high boiling and melting points in comparison to molecules of similar size. Furthermore, the polar nature of water facilitates the formation of hydrogen bonds between adjacent water molecules, which is essential to many of water's characteristics necessary for life.
Look at the diagram of the solar system. The solar system shows the sun and planets in their orbits around Earth in this order: Moon, Mercury, Venus, Sun, Mars, Jupiter, Saturn. What observation did this geocentric model of the solar system help to explain? orbit speed the phases of Venus retrograde motion the rising of the Sun
Answer: c....retrograde motion
The geocentric model of the solar system helped to explain the retrograde motion of Venus.
Retrograde motion, the apparent backward movement of a planet in the sky, is a phenomenon attributed to the differing orbital speeds of planets within the solar system.
Venus, in particular, exhibits retrograde motion due to its orbital relationship with Earth.
As Venus completes its orbit around the Sun, there are times when it outpaces Earth, moving ahead in its orbit, and times when it lags behind.
The geocentric model, an early conceptualization of the solar system, played a pivotal role in explaining retrograde motion.
This model positioned Earth at the center of the universe, with other celestial bodies, including Venus, orbiting around it.
The understanding derived from this model helped clarify why retrograde motion occurs.
When Venus is positioned ahead of Earth in its orbit, the relative motion creates the illusion of backward movement when observed from Earth.
As Earth catches up and overtakes Venus, the normal forward motion resumes.
Although the geocentric model has been superseded by the heliocentric model, where the Sun is at the center of the solar system, the fundamental principle of varying orbital speeds contributing to retrograde motion remains unchanged.
This celestial dance continues to captivate astronomers, offering insights into the dynamic interactions and relative positions of planets in our solar system.
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Please help me with this
Answer:
letter A there u go i hope this helps you
Which of the following substances is a base?
A. Vinegar
B.lemon juice
C. Water
D. Liquid soap
Answer:
liquid soap is a base
Explanation:
liquid soap is made from a base material in which its pH is more than pH 7 while, lemon jiuce, vinegar are acidic in nature with water as neutral
The correct answer is D. Liquid soap.
Explanation:The correct answer is D. Liquid soap.
A base is a chemical substance capable of participating in reactions by accepting hydrogen ions (H+) or donating hydroxide ions (OH-). In the context of liquid soap, it often contains compounds such as sodium hydroxide (NaOH) or potassium hydroxide (KOH). These substances have the capacity to act as bases, and their presence in soap formulations allows them to effectively emulsify oils and fats. Consequently, liquid soap can both clean and sanitize surfaces due to the chemical properties of these base compounds, making them valuable components in everyday cleaning and hygiene products.
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The purpose of a taxonomic system is to allow for a scientific _____________ throughout the world.
Answer:
Standard
Explanation:
The purpose of a taxonomic system is to allow for a scientific Standard throughout the world
which organ is involved in ingestion?
mouth
rectum
villi
liver
Answer:
mouth
Explanation:
What term describes the ability of an animal to know the meaning of the signals it sends and receives?
behavior
instinct
communication
cognition
Answer:
I am thinking it is cognition..
cognition-the mental action or process of acquiring knowledge and understanding through thought, experience, and the senses.
If not it will be instinct
Explanation:
Answer:
The correct answer is cognition.
Explanation:
Cognition in animals is a process by which animals get information and learning by using their experience, senses, intelligence, perception, memory.
It gives the ability of an animal to know the meaning of the signal it sends and receives by using its senses and experience. The ability of cognition is very much important for animals because it helps them to differentiate between dangerous and non-dangerous chemical signals.
It also helps them to know their territory by marking through chemical signals in their territory and getting their mates. Therefore the correct answer is cognition.
Select all the correct answers. A colorimeter is an instrument used for chemical analysis by comparing a liquid’s color with standard colors. In an experiment, a scientist used two colorimeters and noted the readings. The first colorimeter showed consistent readings that were five points lower than the actual reading. The second colorimeter provided readings that were the same as the actual reading. Which two statements are implications of these readings? The first colorimeter is reliable but not valid. The second colorimeter is valid and reliable. Both the colorimeters are reliable and valid. The readings of the first colorimeter can be used without repeating the experiment. The readings of the second colorimeter aren’t reliable and can’t be used for the experiment.
Answer:
The first colorimeter is reliable but not valid
The second colorimeter is valid and reliable
A chemical analysis of the colored solution was done. The readings of the first colorimeter are not the actual readings while the second colorimeter gives the readings same as the actual readings. So statements A and B are the implications of the readings.
What is a colorimeter?Colorimeter is a device that is used to measure the ability of a colored solution to transmit light through it. The concentration of the light-absorbing solute is determined using the colorimeter. When a light beam passes through a colored solution, some part of the incident light is reflected back, some part is absorbed into the solution while some part is transmitted. The colorimeter is sensitive to light and it measures the amount of light that is transmitted and absorbed by the solution.
The colorimeter is based on the principle of absorption of a certain light wavelength by the colored compounds present in the solution.
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if the results of an experiment do not support a scientist’s hypothesis, what should the scientist conclude?
A. her hypothesis was bad.
B. she must have made a mistake or forgotten something.
C. she should give up on research.
D. she may want to alter some aspects of the experiment and try again.
Answer:
D
Explanation:
because there is no bad hypothesis,
mistakes happena and thats why she should try again,
never give up
D is only logicall
If the results of an experiment do not support a scientist's hypothesis, the scientist should conclude B. She must have made a mistake or forgotten something.
What can be concludedScientists understand that experiments can yield unexpected results due to various factors such as errors in the experimental procedure, flawed equipment, or unaccounted variables.
Therefore, the scientist should consider the possibility of errors or overlooked factors before drawing any definitive conclusions about the hypothesis. This is a fundamental principle of scientific inquiry and methodology.
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