Answer:
Answer in explanation
Explanation:
the system of rules which a particular country or community recognizes as regulating the actions of its members and which it may enforce by the imposition of penalties.
Norman thinks that the brain function of students suffers when they receive less sleep. He predicts that students who get less sleep before an exam will receive lower test grades. To investigate his idea, he tests two groups of chemistry students. Group 1 receives four hours of sleep, while Group 2 receives the recommended eight hours of sleep the night before the exam. Both groups consume the same foods before testing and take the same exam in the same room. The room has a constant temperature and level of light for all students. What is the independent variable in Norman's investigation?
The independent variable is the amount of sleep the students get. The independent variable is what you change in an experiment. Since one group received 4 hours of sleep and the other group received 8 hours, that is the independent variable.
The range of grades students receive on their exam will be the independent variable in Norman's investigation.
What is an independent variable?The term "independent variable" means exactly what it seems like. It is a variable that is independent of any other variables you are attempting to measure. For illustration, age could be an independent variable.
A dependent variable is one that keeps changing as a result of the manipulation of the independent variable.
It's the outcome you're after, and it "depends" on your independent variable. Dependent variables are also known as Response variables in statistics.
In Norman's study, the independent variable will be the range of grades students receive on their exams.
Thus, this is the independent variable in the investigation done by Norman.
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The frequency of a certain trait in a population will increase over many generations if which of the following is
true?
A)The trait is carried by all members of the population, but expressed only in a few.
B) Those organisms with the trait have better reproductive success than those without it.
c) Those organisms without the trait interbreed freely with those that have the trait
D)There is a sudden change to the environment that reduces the population with the trait
Answer:
C
Explanation:
I saw the exact same question on my test and I got it right
The frequency of a certain trait in a population will increase if those organisms without the trait interbreed freely with those that have the trait.
What is the frequency of a population?The frequency of a population is the allele frequency, which is common in a population.
It is determined by the count of times an allele appears in a population.
It is also called relative frequency.
Thus, the correct option is C, Those organisms without the trait interbreed freely with those that have the trait.
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What happens to the total energy as the skater moves down and up the U-shaped ramp?
There is no change will be happen in total energy, when skater moves down and up the U-shaped ramp.
What is energy ?In order to accomplish work and to produce heat as well as light, energy must be delivered to a body or even to a physical system. Energy would be the quantitative attribute that does this.
What is total energy?Total Energy means the sum of all final energy used at a certain branch or variable. Because energy data has been entered directly, total energy can be distinguished from overall energy intensity.
There is no change will be happen in total energy, when skater moves down and up the U-shaped ramp.
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Final answer:
The total energy of a skater moving down and up a U-shaped ramp remains constant, with gravitational potential energy converting to kinetic energy as the skater descends, and kinetic energy converting back to potential energy as the skater ascends.
Explanation:
When a skater moves down and up a U-shaped ramp, the total energy of the system is conserved, assuming there is no friction or air resistance. As the skater descends the ramp, gravitational potential energy is converted into kinetic energy, making the skater speed up. This conversion continues until the skater reaches the lowest point of the ramp. When the skater moves up the other side, kinetic energy is converted back into gravitational potential energy, causing the skater to slow down. The highest point the skater can reach on the opposite side will have the same gravitational potential energy as the initial height if no energy is lost to friction or air resistance.
These energy transformations demonstrate the principle of conservation of mechanical energy, which states that the sum of kinetic energy and potential energy in a closed system remains constant if only conservative forces, like gravity, are at work.
What is active transport?
Answer:
it is the movement of ions/molecules across a cell membrane into a higher concentration region which is assisted by enzymes and requiring energy
Explanation:
cellular energy to reach this movement
which survival need best defines "habitat"?
oxygen or carbon dioxide
someplace to live
food
water
Answer:
Someplace to live
Explanation:
Answer:
someplace to live
Explanation:
Which statement best describes the relationship of photosynthesis and energy?
uno)The process of photosynthesis is energy-storing because the process converts light energy into chemical energy, which is stored in the bonds of glucose.
the number after 1)The process of photosynthesis is energy-releasing because the process converts light energy into free energy that can be used for cell functions.
:3 ) The process of photosynthesis is energy-conserving because no energy is used throughout the process of forming glucose and oxygen molecules.
forrrr)The process of photosynthesis is energy-wasting because photosynthesis is an inefficient process that depletes the cell of energy stored in the bonds of glucose.
Answer:
the number after 1:the process of photosynthesis is energy realising because the process converts light energy into free into free energy that can be used for cell functions
Explanation:
in has some explanations about photosynthesis
First statement best describes the relationship of photosynthesis and energy.
Answer: Option A
Explanation:
All living things need food to survive. The plants prepare their own food through the process of photosynthesis. The process of photosynthesis involves the absorption of light energy derived from the sun and it is converted into chemical energy by the leaves and stored in the form of glucose.
The photosynthesis takes place inside the leaf in the presence of water, carbon dioxide and sunlight. The leaves have tiny cell like structures called the chloroplasts and they have a green pigment called chlorophyll which absorbs the sunlight. It helps to release oxygen into the atmosphere rest are stored as nutrients for the plants growth.
Select three factors stem scientist study to help predict earthquakes
•magnitude
•p waves
•s waves
•seismic activity
•tsunami waves
•geological faults
Answer: p waves, seismic activity, tsunami waves
Explanation:
In science. something that stands the test of time, often without change; (2) experimentally confirmed; over and over and (3) universal
Answer:
It's the universal law, Learned this like a billion years ago
Explanation:
Just know it, the universal law can't be changed, it's in place all the time, and even tho scientists test it it never changes, because they can never find out it's wrong.
Answer:
Scientific law is the law that stands the test of time, often without change. It is experimentally validated and confirmed again and again with time. It helps in creating right predictions for different situations.
Explanation:
Scientific law is a universal law which is applicable for everyone in the earth and also has uniformity. However, theory does not stands the test of time. It can be applied facts that are unrelated and relationships that are new. The theory comes from observations and experimental evidences.
Scientists use the process of genetic engineering to
change the arrangement of genes in an organism's DNA.
combine an organism's RNA proteins with its DNA.
insert the DNA of one organism into another organism.
map out the sequences of nucleotides in human DNA.
Genetic engineering often involves inserting the DNA of one organism into another to create GMOs. This uses recombinant DNA technology for purposes like agricultural improvements. Examples include Roundup-ready soybeans and borer-resistant corn.
Explanation:Scientists use the process of genetic engineering primarily to insert the DNA of one organism into another organism. This is achieved using recombinant DNA technology, where foreign DNA is added in the form of recombinant DNA vectors generated by molecular cloning. The organism that receives this recombinant DNA becomes a genetically modified organism (GMO). When the inserted DNA comes from a different species, the resulting organism is referred to as transgenic.
This practice has been applied to bacteria, plants, and animals since the early 1970s for various purposes including academic research, medical treatments, agricultural improvements, and industrial applications. A famous example of GMOs in the United States are Roundup-ready soybeans and borer-resistant corn, which are common in many processed foods.
Which statement is true about solutions?
Solutions are heterogeneous and can be physically separated.
Solutions are mixtures that can be physically separated.
Solutions are homogeneous and must be chemically separated.
Solutions are made up of two substances that are chemically combined.
Answer:
Solution are mixtures that can be physically separated
Explanation:
This is because we can separate solutions physically using some distinct separation techniques such as evaporation, simple distillation, distillation e.t.c
Answer:
The answer is Solutions are mixtures that can be physically separated.
Explanation:
A solution is a homogeneous mixture at the molecular or ionic level of two or more pure substances that do not react with each other, whose components are in variable proportions. A chemical solution consists of a solvent and one or more solutes. The solute is the substance that dissolves and the solvent that dissolves it. the solutions can be separated by physical processes
Which example involves a cell membrane receiving and sending messages?
O
A. A tube worm retreating from a predator
O
B. A large fish chasing its prey in the sea
O
C. A water molecule moving inside a cell
O
D. A protein forming a channel for an ion
The answers are: A and B
A. A tubeworm retreating from a predator
B. A large fish chasing is a prey in the sea
Further Explanation
The ability of cells to communicate, that is, receiving and sending signals from and to other cells, determines the interaction between unicellular organisms and regulates the function and development of the body of multicellular organisms. For example, bacteria communicate with each other in the quorum sensing process to determine whether they are sufficient before forming biofilms, while cells in animal embryos communicate to coordinate the process of differentiation into various cell types.
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Details
Class: Middle School
Subject: Biology
Keywords: cell communication
Answer:
A. A tube worm retreating from a predator
Explanation:
Cells can receive and send messages as a form of communication for a certain function within an organism to be performed. This function can be related to the regulation of some biochemical process, development of some activity and even when the organism needs to defend itself, escape or adapt quickly to environmental changes.
The ability to send and receive messages is regulated by the cell membrane. An example involves a cell membrane receiving and sending messages occurs in a situation where a tubular worm needs to retreat from a predator. At that moment, the cells communicate to carry out the escape and protection process.
Pure water is neutral what is the appropriate justification for this
Answer:
Pure water is neutral in nature and this can be justified via the fact that when water is broken down, it gives equal concentration of acidic (H+) and basic(OH-)
Explanation:
Which of these is most like a closed system that does not allow transfers in or out of the system?
A Planet Earth
B A coral reef
C A school
D The human heart
Planet Earth is most like a closed system that does not allow transfers in or out of the system
Answer: A. Planet Earth
Explanation:
In a closed system, there is no exchange of mass. However, the energy might get exchanged. The exchange of mass and energy depends upon the property of the membrane or the boundary of the substance or an object.
The Earth is basically a closed framework; it acquires huge amount of energy from the Sun yet the exchange of matter with the outside is just about zero. Material streams between stores or sinks along pathways, or motions.
What is a model?
A.a simplified, constructed version of a complex object or idea
B.an alternative, upgraded version of a complex object or idea
C.a detailed, more accurate version of a simple object or idea
D.a well-researched, identical copy of a complex object or idea
Answer:
C. a detailed, more accurate version of a simple object or idea
Explanation:
A model is a detailed, more accurate version of a simple object or idea.
5. The modern model of the atom shows
that electrons are
A. combined with neutrons in the nucleus.
B. located in a solid sphere covering the
nucleus.
C. orbiting the nucleus in fixed paths.
D. found in regions called orbitals.
o nobis
The answer is D. The first two answers would relate to neutrons and protons and the third answer is false due to electrons never found in a fixated path.
Answer:
D. found in regions called orbitals
Explanation:
Orbitals are regions in the electrosphere of the atom where the probability of finding the electron, or the wave function that describes the motion of an electron, is greatest.
According to Pauli's Exclusion Principle, each electron has a maximum of two electrons. For orbitals that do not have both electrons, we say they are incomplete and that they are isolated or unpaired electrons.
In addition, when filling orbitals, ie, doing electronic distribution, this should be done according to the Hund Rule or Maximum Multiplicity Rule, which says that this filling should be done in a way that gets as many as possible. of unpaired orbitals.
Which biome is characterized by a lack of season temperature variation, broad-leaves plants, heavy rainfall, and a close proximity to the equator?
Answer:
Rainforest.
Explanation:
The rainforest biome is located near the equator. The key words in this question are heavy rainfall, as no other biome experiences heavy rainfall.
what does conptt mean?
Answer:
It means consistency.
Explanation:
The results of observations and/or experiments are reasonably the same when performed and repeated.
It means consistency.
Hope this helps!
What are two ways animals contribute to the carbon cycle?
Final answer:
Animals contribute to the carbon cycle by exhaling carbon dioxide during respiration and via methane production in animal husbandry practices, both of which affect atmospheric carbon levels and can contribute to global warming.
Explanation:
Animals contribute to the carbon cycle in several significant ways. Firstly, they participate by releasing carbon dioxide (CO2) into the atmosphere as a byproduct of cellular respiration. When animals breathe, they take in oxygen and release CO2, which is a critical component of the global carbon cycle. Secondly, through the practice of animal husbandry, humans rear large numbers of livestock for food, which further contributes to the carbon cycle. These animals not only respire, releasing CO2 but also produce methane (CH4), a potent greenhouse gas, through enteric fermentation. Hence, animals influence both the natural carbon exchange in ecosystems and the anthropogenic impacts on the carbon cycle that can contribute to global warming.
Based on the benefits received from the Three Gorges Dam, China is planning four new dams for the Yangtze River further upstream. The new dams will provide nearly double the electricity generated at Three Gorges , and would trap sediments before they reach the Three Gorges Dam reservoir . Now that the environmental consequences of large dams are known , do you think that China should reconsider additional large hydroelectric projects ?
Answer:
No. China is already consuming third of the world's coal production for electricity, which is a serious challenge to the environmental. The trade off is fair so China should build the new dam.
No, you do not have to think that China should reconsider additional large hydroelectric projects. This is because of the fair trade-off in China that makes a difference.
What is a Hydroelectric project?A hydroelectric project may be defined as a type of renewable source of energy that significantly generates power through utilizing a dam or diversion structure in order to alter the natural flow of a river or other body of water.
Being the world's third largest producer of coal and electricity, China is creating a major threat to the environment that become one of the most potent reasons for climate change. But due to the existence of a fair trade-off in China, they are focussing on building a new and large number of dams to a larger extent.
Therefore, you do not have to think that China should reconsider additional large hydroelectric projects. This is because of the fair trade-off in China that makes a difference.
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What traits might be passed to offspring if both parents are California quails?
Answer:
Half of the DNA of one parent and half of the DNA
from the other parent to the offspring.
Example: If one parent was 72% English quail, the offspring would only be half.
why has australia moved 6ft in the last 20 years?
tectonic plates in the earth's crust has moved almost every piece of land from its original spot. On average, tectonic plates moved land masses about 2.3 CM a year.
What was the main reason for the settlement of the Plymouth Colony?
Freedom of religion and creating a Utopian society
Searching for gold and silver), making a profit (to become rich) and searching for
a Northwest Passage.
I do not know the answer
Provide a base of operations against Spanish and French aggression
To find a Northwest Passage to trade for spices
Answer:
The main reason behind Plymouth settlement is to achieve freedom of religion.
Explanation:
Some of the members of Separatist Church from England in 1620, September, during the era of King James I sailed towards Mayflower and ultimately landed in the Cape-Cod or Massachusetts. They finally decided to settle in the Plymouth Rock, the first permanent European settlement in New England, The Plymouth Colony.
The Separatist believed that the European Churches have somehow failed to perform the important works of Protestant Reformation, thus they left the Church and settled in Plymouth to regain freedom of religion and securing a better Utopian society there.
What is the independent variable?
A. The height of the plant
B. The intensity of the light
C. Sunlight
D. The color of the light
Answer:
sunlight
Explanation:
sunlight doesn't depend on any of the other factors
2. Which of the following sequences of organization is likely to
be seen in a multicellular organism, going from smallest to
largest?
a) cell, organ, tissue, organism
b) cell, organ, system, tissue
c) cell, tissue, system, organism
d) organism, system, organ, tissue
The levels of organization in a multicellular organism from a simpler perspective to a more detailed and complex one is cell, tissue, system, organism.
The cell is the minimum unit of life: all living beings are made up of at least one cell (some of only one of them, called unicellular; others of more than one, called multicellular organism).According to their functions and needs, cells are grouped together to fulfill a common function, this grouping of common cells is called tissue.The systems are composed of the different organs and tissues of the body cooperating, helping each other, or working together.The total of the organs, tissues and cells of a living being compose it, and define it as an individual, that is, an organism.Therefore, we can conclude that matter is organized in levels of complexity, these are, from smallest to largest are: cell, tissue, system, organism.
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What gets rid of cell waste by breaking down larger molecules into smaller ones
Answer:
Lysosomes
Explanation:
is also called as suicidal bag of the cell as it is involved in digestion of worn out or damaged cell or large molecules into smaller one by secreting digestive enzymes. The smaller molecules is excreted out of the cell though cell membrane.
HELP ME ASAP
Which resources would two different species in the same community
compete with each other for? Select the three correct answers.
A. Mates
B. Food
C. Space
D. Water
Answer:
b c and d
Explanation:
they are from different species therefore would not compete for same mates.
Answer:
food, space, water
A very acidic pH level is _____, and a very basic pH level is _____. 1;13 13;1
Answer:
A very acidic pH level is 1, and a very basic pH level is 13.
I'm not sure I understand about your ratios, whether they are the choices or just numbers.
Explanation:
On the pH scale, the more you go to the left, the more acidic the solution is. Numbers below 7 are considered acidic, and the lowest number is the most acidic. The more you move to the right, the more basic or alkaline the solution is. Numbers above 7 are considered basic. So the higher the number of that side of the scale, the more basic stuff is. 7 is considered neutral.
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Answer:
1; 13Explanation:
What is the major source of water pollution that washes chemicals and other pollutants from improperly managed land
Answer:The U.S. Environmental Protection Agency (USEPA) provides the following definition of NPS pollution: Non-point source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification.
Explanation:
Every cell in the body requires oxygen for respiration so that sufficient energy can be produced. Carbon dioxide, a waste product, is also produced and needs tone removed. Therefore, the levels of both gasses must be regulated. How does this explain the changes in your pulse rate?
Please help me google isn’t doing its job and I’m so confused
Answer:
as explained below:
Explanation:
it results as follow:
while you are jogging or doing any physical activity than your body requires alot of energy and produce a lot of carbon dioxide which causes the heart to beat fast as to remove co2 and take o2 from the blood leading to higher rate of pulse.
on the secon hand if you are sedentary , consumption and production of o2 and co2 respectively will decrease leading to the slow beating of heart leading to low pulse
Final answer:
The level of carbon dioxide in the blood is closely monitored to maintain homeostasis. When there is an excess of carbon dioxide, the brain triggers a faster pulse rate to increase breathing and remove the excess carbon dioxide.
Explanation:
The level of carbon dioxide in the blood is closely monitored to maintain blood gas and pH homeostasis. Cells in the brain detect the level of carbon dioxide and adjust the rate of breathing accordingly. When the level of carbon dioxide becomes too high, the brain triggers a faster pulse rate to increase the rate of breathing and remove the excess carbon dioxide. This helps to regulate the levels of both gases in the body.
What is one example of a primary succession
Answer:
Examples of where primary succession may take place include the formation of new islands, on new volcanic rock, and on land formed from glacial retreats.