The correct answer is: B. A person spends one hour each day under the ultraviolet rays of a tanning bed.
The relationships between ultraviolet (UV) light and skin cancer are highly positive because it has been shown that indoor tanning bed use represents an avoidable risk factor for melanoma and non-melanoma skin cancer. UV light is a form of radiation that causes mutations in DNA by causing the chemical changes that alter the shape of the DNA. So, UV light is a potent mutagen and thus, tanning bed (source of UV light) can cause damage to the DNA in the surface layer of your skin after repeated or prolonged exposure. This might increase the risk for skin cancer.
I just took this test recently and the answer is:
B - A person spends one hour each day under the ultraviolet rays of a tanning bed.
This could cause a genetic mutation in the skin cells and cause skin cancer.
The image shows rock strata from different regions on Earth. Which fossil in the strata would best serve as an index fossil?
Fossil would best serve as an index fossil.
F1
F2
F3
F4
Answer:
F3
Explanation:
An index fossil is a fossil of an organism which lived at only one time during the evolutionary history. The index fossils are obtained from rock of one particular evolutionary time zone. In the given image, F3 fossils are present in same strata or layer of the rock in all three regions. They are also not present in any other layer of any region. Hence. F3 would serve as best index fossil.
F3 is the appropriate option which will best serve as an index fossil and is denoted as option C.
What is an Index fossil?These are fossils which are used to define and identify geologic periods and are obtained from rock of one particular evolutionary time zone.
In the given image, F3 fossils are present in same strata of the rock in all three regions which is why it will best serve as an index fossil.
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Please help me answer asap
Ok here we go:
Science starts with observing which leads to hypothesis, which is tested by experiments.
The other two i am not sure of. Hope i was a help to you. One thing you can do to figure out the other two is google: "what type of science includes medicine and envirnmental science", and do the same for the other one.
The subject of this question is ecology. The concept map involves filling in the correct words or phrases in each box. The sequence starts with observing, followed by testing, and ends with organizing data.
The subject of this question is ecology, which is the study of the relationships between organisms and their environments. In the given concept map, the word or phrase that fits in each box is:
XL is either ecology, chemistry, or life science.
Starts with observing.
Leads to testing.
Is tested by experimentation or data collection.
Followed by organizing data.
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Mr. Winters was having a roach problem in his classroom. He bought a product to kill the roaches. The advertisement said that the roach spray would be effective for at least one month. Mr. Winters and his class kept data on the roaches in the classroom after spraying. Based on the results, what could Mr. Winters infer about the roach spray?
A) The spray did not kill any roaches.
B) The spray worked, but only for about 10 days.
C) The spray kept the roach population down for 21 days.
D) The spray worked just like the advertisement said it would.
Answer: B) the spray worked, but only for about 10 days
Explanation:
On a microscope, what is used for final focusing?
Fine adjustment knob is used for final focusing
Explanation :On a microscope, there are two types of knobs are present to adjustment the images i.e coarse and fine adjustment knob. Coarse adjustment knob is used to make the rough focus by moving the specimen stage vertically. Whereas fine adjustment knob is used to bring the image into sharp focus. It is also used to focus on different parts of the specimen under examination
gimme my 400 points g
Propose a 5-year plan to phase out cement building blocks an replace them with more eco-friendly mycelium composites.
Answer:
Mycelium is the part of fungus consisting of a mass of branching thread like hyphae. It makes up the body of the fungus living on a particular substrate. Mycelium when dried can be a strong material which can be water, fire and mold resistant. Mycologist Philip Ross found out that dried mycelium can be grown and used for making building blocks. These mycelium bricks are organic and compostable. Their consistency is also stronger than concrete bricks. These mycelium bricks can be painted. These are bulletproof and can withstand extreme temperatures. When their use is over they can be composted therefore, biodegradable and does not harm nature in anyway. Hence, they are eco-friendly. Their durability and strong structural construct can be used for replacing them with other chemically synthesized building material. A five year plan with eco-friendly mycelium bricks can result when fungus mycelium bricks is considered only mandatory material for building construction purpose. Some durable and high tensile strength material if added in them can improve their quality provided that they are completely compostable.
Claire, an ecologist, is finding it difficult to identify an interaction in nature because of changing environmental conditions and the complex indirect interactions of multiple species. Which interaction is Claire trying to find in nature?
A.
interference competition
B.
apparent competition
C.
exploitation competition
D.
predation
E. symbiosis
Answer:
The correct answer is option C, that is, exploitation competition.
Explanation:
The competitions can be classified usually into two on the basis of the mechanism taking place, that is, the exploitation competition and interference competition. The competition among the organisms is indirect in case of exploitation competition, while in opposition to it is interference competition wherein in the association between the competing species is direct. However, though the interaction is not direct, the competition between the species in exploitation competition leads to depletion of the resources, thus, restricting the accessibility of the resources for other species.
Answer:
B. apparent competition
Explanation:
for plato
Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does this evidence suggest?
This evidence suggest that all three living creatures that are mentioned have a common ancestor, even though they have been split into different types of groups of living organism millions of years ago.
Science suggests that all of the living organisms on the planet have a common ancestor. Since we are talking about a common ancestor that lived few hundred million years ago, the living organisms split into different groups, and they do not resemble each other nowadays. The fruit fly is an insect, and the humans and mice are mammals, so they are into totally different groups, and it is easy to see by the genetic evidence that they are very distantly related, but the humans and mice are much more closely related because they belong to the same super family, and their connection is much more recent.
Answer:
a
Explanation:
A certain species of fish can have either long or short fins. The allele for long fins is dominant over the allele for short fins. A heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. Of the offspring, will have long fins and be , and will have short fins and be
Answer:
A certain species of fish can have either long or short fins. The allele for long fins is dominant over the allele for short fins. A heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. Of the offspring, 50% will have long fins and be heterozygous , and 50% will have short fins and be homozygous.
Explanation: It's correct on Plato
How is science different from other subjects that involve thought, such as art, philosophy, and religion?
A.
Science is more objective, since it is predominantly based on evidence.
B.
Science requires more faith rather than logic and reason.
C.
Science has a tendency to be heavily influenced by society.
D.
Science is more subjective, since theories are based on opinions.
The correct answer is: [A]:
_________________________________________________
" Science is more objective, since it is predominantly based on evidence. "
_________________________________________________
If the metamorphic rock marble dissolves in presence of weak acid,which rock probably was changed into marble by the addition of heat and pressure?
The answer is limestone. Hope I helped you out!
Answer:
Limestone
Explanation:
Marble is a metamorphic rock which is formed, when the sedimentary rock named limestone is subjected to extreme pressure and temperature condition. During this process of metamorphism, the calcite minerals present in the rock limestone undergoes the process of re-crystallization, thereby producing a much more denser and higher grade rock where the calcite crystals alters into more forcibly equigranular crystals.
This is how limestone after going through the process of metamorphism, changes into a metamorphic rock named marble.
Organic Compounds: 1. Organic molecules are considered organic because they contain what type of atoms? 2. Where is energy stored in a molecular structure? 3. This stored energy in a molecule determines what type of value? 4. What are the 4 organic compounds (macromolecules) that we studied? 5. Proteins are made up of what subunits (monomers)? 6. ______ amino acids are found in the body. How do humans get the other 8? 7. Proteins have the same caloric value as which other organic macromolecule? 8. Carbohydrates are made up of what subunits (monomers)? What is an example? 9. What is the main function of carbohydrates? 10. How are lipids structurally different from carbohydrates? 11. What’s the difference between unsaturated and saturated fat? 12. Glycerol and fatty acids make up which macromolecule? 13. When are lipids used as a food/energy source? 14. Why do lipids have a greater caloric value than carbohydrates or proteins? 15. List all the functions of proteins in the human body: 16. List the functions of lipids/fats in the human body: Chemical Reactions: 17. What are reactants in a chemical reaction? What are products? 18. Which type of reaction breaks down molecules to release energy? 19. Which type of reaction absorbs more energy than it releases in order to build up molecules? 20. What do you call the amount of energy required to start a chemical reaction? 21. Energy is often given off in the form of what? 22. How can temperature affect a chemical reaction? 23. What’s the difference between hydrolysis and dehydration synthesis reactions? Enzymes/Catalysts: 25. How does a catalyst affect a reaction? How does it work? 26. What are enzymes? 27. Enzymes are very specific. How many substrates do they work with? 28. What environmental factors can affect the function of an enzyme? What can happen to the enzyme if you alter the environment? 29. What is happening in the graphs below/ what does each show you? a. b. 30. Define each of the following terms and describe how that term applies to living things. Activation energy Enzymes Reactants/substrates Products Bonds
The pia mater layer in the ventricles is rich in blood vessels
Pia mater (soft inner layer of the dural membrane system) The pia mater, which contains vessels, is the innermost layer of the three meningeal membranes. ... Furthermore, it creates the choroid plexus, a network of bold vessels, which enter the brain ventricles and produce the cerebrospinal fluid (CSF).
The pia mater, a delicate layer rich in blood vessels, covers the brain and spinal cord. Conversely, ventricles are fluid-filled compartments where cerebrospinal fluid (CSF) is produced by the choroid plexus. Both pia mater and ventricles are essential parts of the brain's nourishing and protective mechanisms.
Explanation:The pia mater is a thin, delicate layer that directly covers the brain and spinal cord. It is rich in blood vessels that nourish the central nervous tissue. The ventricles, on the other hand, are fluid-filled compartments in the central nervous system (CNS) where a tissue called the choroid plexus produces cerebrospinal fluid (CSF).
The pia mater and the ventricles are part of the brain's protective and nourishing mechanisms. The brain floats in CSF, which guards it like a cushion, helping to make it neutrally buoyant. Moreover, the CSF also circulates chemical substances throughout the brain and into the spinal cord.
The ventricles and their choroid plexuses are a key component of the circulation of cerebrospinal fluid, which also contributes to waste removal from the CNS. The choroid plexuses are structures where ependymal cells line blood capillaries filtering blood to produce CSF in the four ventricles of the brain.
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Changing the pendulum design after the first trial was an example of _____________ to solve the problem presented by the teacher. A) designing the model B) evaluating the model C) identifying the problem D) doing research on the problem
Answer:
evaluating the desing
Explanation:
Why do weather reports always emphasize cyclones and anticyclones?
Bc they are both names, which grammerly u will “ the proper titles
Suppose the parents indicated in the interactive produced 192 peas. Determine the expected number of green and round offspring.
The number of the offspring produced in the dihybrid cross is 192.
In dihybrid cross, the ratio of the plants obtained in the F2 generation is 9: 3: 3: 1.
Thus, yellow round offspring is 9/16, green round offspring is 3/16, yellow wrinkled offspring is 3/16, and green wrinkled offspring is 1/16.
Thus, the number of green and round offspring produced can be calculated as:
Green round seed = 3/16
= 3/16 × 192
= 576/16
= 36
Thus, out of 192 peas, 36 will be green and round.
Suppose the parents indicated in the interactive produced 192 peas. Then the expected number of green and round offspring is thirty-six.
Further Explanation:
A recessive trait is defined as a trait that gets expressed by an individual when they show a homozygous recessive condition. This means that if an individual showing a recessive trait will definitely possess both the recessive alleles for that trait as a recessive trait gets concealed by the presence of allele for the dominant trait.
The monohybrid cross is an experiment between the first generation organisms that differ in only one trait. The resultant ratio of the f-1 generation is 1:2:1. A Punnett square mainly used to predict the possible genetic outcomes of a monohybrid cross. Mainly the dihybrid cross occurs when there are two traits are present.
The total number of offspring produced in the dihybrid cross is 192. In the dihybrid cross, the ratio of the plants obtained in the F-2 generation is 9:3:3:1.
Now, yellow round offspring is 9/16
Green round offspring is 3/16
Yellow wrinkled offspring is 3/16
Green wrinkled offspring is 1/16.
Thus, the number of green and round offspring produced can be calculated as:
Green round seed = 3/16
= 3/16 × 192
=576/16
= 36
Thus, out of 192 peas, 36 will be green and round.
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Grade: High School
Subject: Biology
Chapter: Mendelian Inheritance
Keywords:
Generation, plant, pea, monohybrid, dihybrid, cross, offspring, trait, present, green, round, yellow, wrinkled, dominant, recessive.
Genes are responsible for:
A. all inherited traits of an organism.
B. all traits of an organism.
C. no traits of an organism.
D. all preferences of an organism.
A. all inherited traits of an organism.
Why do organisms have a common name and a scientific name?
The reason that organisms have common and scientific names is because there has to be a universal name for all organisms in theory.
Common names can be many different things, dependent on the area of the world you live in, Scientific Names are part of a series called binomial nomenclature which is a universal way to name all organisms. For example, a goose will be called anser anser across the world, then it changes some when you go into breeds, but for the most part, you can get by with that name.
Based on this information, what type of transport is used for glucose in blood and intestinal cells?
What type of transport is involved in this process?
Sugar Glucose is transported by Active Transport from the gut into Intestinal epithelial cells.
Hope this helps.
Davismr00~
Answer:
Transport active.
Explanation:
Glucose is the main source of cellular energy. It is captured by most cells in the body through carrier proteins present in the plasma membrane in favor of their concentration gradient. On the other hand, in intestinal epithelial cells and renal tubules, glucose is captured against its concentration gradient using apical membrane transport proteins and then exits the cell through the basement membrane to enter the bloodstream, in favor of its concentration gradient using membrane carriers known as GLUT's.
Glucose uptake by intestinal epithelial cells always occurs by active transport because it uses a membrane protein in transport even when it is in favor of the concentration gradient.
Which two elements are always found in amino acids?
A nitrogen and sulfur
B carbon and oxygen
C hydrogen and phosphorus
D sulfur and oxygen
Well let's see, amino acids are part of the Protein bio molecule, which has carbon, oxygen, hydrogen, and nitrogen. Since amino acids are the monosaccharide, you can cross off A, C, and D.
Amino acids are organic compounds that must contains carbon and oxygen. Option B is correct.
Amino Acids:
These are organic compounds that contains an amino group and a carboxylic group along with a side chain. They bond by the peptide bond to form proteins.
Such as - Alanine composed of a chiral carbon with amino, and carboxylic group and an methyl side chain.
Organic compounds are those compound that has Carbon, oxygen and Hydrogen.
Therefore, amino acids are organic compounds that must contains carbon and oxygen.
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Trevor dropped a bit of olive oil on the kitchen floor while he was cooking. Later, his mother slipped on the spot where he dropped the oil and fell.
What can Trevor infer based on his observations?
A.
Olive oil can be used as an adhesive between two solid objects.
B.
The oil reduced the friction between the floor and his mother's foot.
C.
Trevor's mother slipped on the spot where he dropped the oil.
D.
The oil increased the gravitational force on his mother's foot.
Answer:
B.
The oil reduced the friction between the floor and his mother's foot.
Explanation:
When things slide, it is just fancy terms for one of two things- force exceeding the amount of friction on the ground, or the friction decreasing itself.
In the question, it is implied that Trevor's mom is walking completely normal, excluding the olive oil; therefore, there is no force exceeding what the friction of the ground can prevent from sliding. This leaves the other option, which implies that the olive oil decreased the friction between the floor and his mother's foot, which makes sense as olive oil is a lubricant.
Henceforth, the answer is B. The oil reduced the friction between the floor and his mother's foot.
Answer:
The oil reduced the friction between the floor and his mother's foot.
Explanation:
Why are populations with high levels of genetic diversity more stable than populations with low levels of genetic diversity?
A. Populations with high levels of genetic diversity are less likely to have high levels of variation in alleles.
B. Populations with high levels of genetic diversity are more likely to have individuals with traits that help them survive if conditions change.
C. Populations with high levels of genetic diversity are less likely to interbreed with other populations.
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
Explanation:Whenever any change in climate or environment will occur the individuals with high level of genetic diversity will more likely to survive because they have the individuals that undergo natural selection.
Answer:
D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.
Clarification:
At whatever point any adjustment in environment or climate will happen the people with significant degree of hereditary variety will bound to endure in light of the fact that they have the people that go through normal choice.
What are the stages in the water cycle?
First water evaporates from watersources on earth, mostly from seas. Them, it forms clouds on the atmosphere. These will condense and give way to precipitation. Once the rain falls, some will form puddles, some will fall back from where they came frome (rivers, lakes and oceans) and part of it will be drained to underground watersources, in a process called infiltration.
The water cycle also includes some less important processes such as sublimation, transpiration and evapotranspiration.
→ Hopefully the image below will help you understand the water cycle better.
Hope it helped,
BioTeacher101
A technique psychologists use to measure electrical activity in the brain is
A. EEG
B. lesion
C. fMRI
D. CAT Scan
E. PET Scan
A technique psychologists use to measure electrical activity in the brain is A. EEG
Electroencephalogram (EEG) detects the brain activity through electrical signals.
What is EEG?EEG is a technique where graphical image of the brain is procured using electrical signals.
EEG is exclusively carried out for brain study. It is helpful in diagnosis of seizures and epilepsy.
Multiple electrodes are attached to the brain scalp. A small amount of current in the power source generates electricity.
This produces electrical signals which are carried to the brain. As a result an electrogram is generated on the screen which records the activity in brain.
EEG is an old method of investigation as now several advanced and sensitive tests are available. For eg., MRI, CT-Scan and PET Scan.
EEG is a non-invasive technique. It is simple and easy to perform.
EEG is cost effective as compared to other tests. It does not require large equipment or set up and can be performed at clinic itself.
Therefore, EEG can be used as diagnostic test for evaluation of brain disorders.
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The presence of fossils suggests that a rock is MOST LIKELY
A) igneous.
B) intrusive.
C) sedimentary.
D) metamorphic.
C) sedimentary
since sedimentary rock doesn't change igneous rocks are usually formed from hot lava ,and metamorphic are like rocks mixed along that have been affected by either temperature or pressure and intrusive rocks along with intrusive
The presence of fossils suggests that rock is most likely Sedimentary.
What do you mean by Fossils?The fossils are the dead organic remains in the soil over a long period of time. It is preserved evidence of life from a past geological age.
Almost all fossils are preserved in sedimentary rock. This is because the sedimentary rock is created as layers of sediment pile on one another and are compressed together.
Therefore, the presence of fossils suggests that rock is most likely Sedimentary.
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How is co transport used to move glucose into the intestinal epithelial cells
Co-transport system of intestinal epithelial cells. Glucose then moves into the blood through the permease in the membrane between the cell and the blood. Thus, ATP is used as an energy source to drive Na+ out of the cell, resulting in glucose transport from the intestine to the blood.
Final answer:
Glucose is transported into intestinal epithelial cells via secondary active transport involving the SGLT1 cotransporter, which uses the energy from a sodium ion gradient maintained by the Na+/K+-ATPase pump. This pump exchanges sodium for potassium with ATP hydrolysis, allowing glucose to accumulate in the cell and then diffuse into the bloodstream through the GLUT2 transporter.
Explanation:
Co-transport of glucose into the intestinal epithelial cells is facilitated by a mechanism known as secondary active transport. This process involves the sodium-glucose cotransporter 1 (SGLT1), which simultaneously transports glucose along with sodium ions into the cell against the glucose concentration gradient. The energy for this movement is derived from the sodium ion gradient established by the Na+/K+-ATPase, which pumps sodium out of the enterocyte into the bloodstream in exchange for potassium ions, utilizing ATP. Once inside the cell, glucose then passively diffuses out into the bloodstream through the GLUT2 transporter located in the basolateral membrane. As this transport requires ATP to maintain the sodium gradient, it is termed active transport.
It is essential to maintain a low concentration of Na+ inside the cell to continue this process. Hence, the Na+/K+-ATPase pump expels Na+ ions out of the cell into the blood plasma, maintaining the gradient that powers the SGLT1-mediated glucose transport from the lumen of the gut into the cell.
Explain what it means when we say that a nation is an imagined community, and give an example
An imagined community is a concept developed by Benedict Anderson in his 1983 book Imagined Communities, to analyze nationalism. Anderson depicts a nation as a socially constructed community, imagined by the people who perceive themselves as part of that group.
The activity of k 40 in a 70 kg human body is estimated to be 120 nci what is this activity in becquerels
The activity of a sample is determined in terms of the number of nuclear disintegrations in a second. The Curie or Ci is a common unit for activity measurement. Bq or Becquerel refers to the SI unit for radiation activity measurement.
The activity of K-40 in 70 kg human body is 120 nCi
The relationship between Curie and Becquerel are as follows:
1Ci = 3.7 × 10¹⁰ Bq
1nCi = 37 Bq
Thus, 120 nCi × 37 Bq / 1nCi = 4.4 × 10³ Bq.
Hence, the activity of K-40 in a 70 Kg human body is 4.4 × 10³ Bq .
The activity of K-40 in a 70 kg human body, given as 120 nCi, is equivalent to 4.44 × 10⁴ becquerels when converted using the appropriate conversion factors.
Explanation:The activity of K-40 in a 70 kg human body is estimated to be 120 nCi. To convert this activity to becquerels, we use the conversion rate where 1 Ci = 3.70 × 10¹⁰ Bq. Therefore, we first convert nanocuries (nCi) to curies (Ci) by dividing by 1 billion (since 1 nCi = 10⁻¹ Ci), and then multiply by the conversion factor.
Here is the step-by-step conversion:
Convert the activity from nanocuries to curies:The activity of K-40 in a 70 kg human body is therefore 4.44 × 10⁴ becquerels.
There was a body found at the crime scene on Willow Lane. Early in the investigation, the temperature of the internal organs needs to be measured in an attempt to determine _____.
how the person was killed
time of death
whether the person died due to a infectious disease
the general routine at any crime scene
the time of death because if a person is still warm the death happened recently but if the person is cold it most likely happened awhile back
What property of water refers to water's ability to move up the stem of a plant against the force of gravity?
Surface tension
Cohesion
Adhesion
Capillary action
Answer:
Or i think its capillary action
Explanation:
Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in a thin tube, in porous materials such as paper and plaster, in some non-porous materials such as sand and liquefied carbon fiber, or in a biological cell. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.
If a sealed balloon is filled and kept in a deep freezer for a period of time, it will shrink in size. Determine the best reasoning for this outcome. A) The air particles inside the balloon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume. B) The air particles inside the balloon slow down due to lower thermal energy. As a result, the air particles become charged, attract to each other and take up a smaller volume. Therefore, the balloon shrinks. C) The rubber latex of the balloon becomes colder and will resist stretching and push the air particles inward until the inside pressure equals the outside pressure and equilibrium is established. D) The density of the air particles increases within the balloon causing some particles to escape out of the balloon. This leads to an increase in the particles and, thus, pressure outside the balloon. This causes the balloon to collapse.
Answer:
The air particles inside the ballon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume.
Explanation:
When particles are excited by an increase in thermal energy they tend to vibrate more and collide. The charged partcles repel each other making them occupy a bigger volume. When the balloon is placed in a deep freezer, the energy is lost to the surrounding thus the particles come together occupying a smaller volume hence the size of the balloon decreases.
Answer:
A) The air particles inside the balloon slow down due to lower thermal energy. As a result, fewer collisions take place per second and this leads to a lower pressure inside the balloon. The pressure on the outside of the balloon pushes the balloon to a smaller volume.
Explanation:
took the usa test prep