Answer:
Chromatids of homologous chromosomes exchange corresponding segments.
Explanation:
The crossover of chromosomes is the exchange of genetic material between homologous chromosomes. Homologous chromosomes are present in the meiosis I, but not in meiosis the II. After pairing up of in the prophase I, homologous chromosomes are able to exchange some corresponding segments and a cross-over occurs. Thanks to the cross-over event, each chromosome will have a new combination of genes. Without this, parents will produce gametes with only two different gene combinations.
Answer:
Chromatids of homologous chromosomes exchange corresponding segments.
Which is the best definition of activation energy
Answer:
the energy required to break the bonds of reactant molecules
That is the best answer.
The breakdown of pollutants, water
purification and soil formation are valuable
services provided by:
A hellstle sources
C.ecosystems
B. positive feedback loops
D. negative feedback
A
HELP ASAP
Answer:
C.
Explanation:
Ecosystems like wetlands can break down pollutants and purify water. Soil formation is caused by primary succession in ecosystems. Never heard of hellstle sources so sorry if I got this wrong.
a.
10. Which of the following is NOT a way to deal with hazardous waste?
Above ground storage
b. Biological Treatment
C. Incineration
d. Export
Answer:
I might be wrong with this, but from my research it says Export doesn’t help deal with hazardous waste.
Answer:
Export
Explanation:
When performing a tourne or 'turned' potato cut, how many sides are
ideal?
Four
Six
C
Seven
D
Five
Answer:
A traditional tournee cut has seven sides, meaning you should make seven cuts in each direction
Explanation:
Which of the following are accessory organs within the digestive system? (please select ALL that apply) *
Stomach
Large Intestine
Liver
Pancreas
Rectum
all of them are the part of digestive system
Liver and pancreas are the accessory organs within the digestive system.Thus, the correct options are liver and pancreas.
The human digestive system is made up of the gastrointestinal tract and the accessory organs which are needed for digestion . Digestion involves the breakdown of food into smaller parts, until they the food is absorbed and assimilated into the body. The process of digestion takes place in three stages: the cephalic phase, the gastric phase, and the intestinal phase.
The primary organs of the digestive system include organs like stomach,large intestine and rectum.Thus, the accessory organs within the digestive system are liver and pancreas.
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pls help!! What is it that acts as a template for making RNA?
Answer:
Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule.
Explanation:
Transcription uses one of the two exposed DNA strands as a template; this strand is called the template strand. The RNA product is complementary to the template strand and is almost identical to the other DNA strand, called the nontemplate (or coding) strand.
Drag each option to the correct location on the image.
Classify the goods as public or private property.
sewer systems
mines
radio broadcasts
manufactured goods
Answer:
PUBLIC: radio broadcast , manufactured goods
PRIVATE: sewer system , mines
We interviewed 3 students about what they thought were the reasons for the change in Guppy population and this is what they said:
● Norise says the change in the guppy population was caused by a mutation.
● Lauren says the change was caused by a change in the environment.
● Megan thinks both Norise and Lauren are correct.
Who do you think is right? Explain what happened to the guppies over many generations.
Use multiple pieces of evidence of the notes in your answer to receive full credit.
Answer:
Answer:
Megan is right.
Explanation:
The guppy is a very adaptable freshwater fish, commonly found in aquariums world wide. The success of the guppy is mostly due to its ability to adapt to the changes in its environment. Guppies were originally found in the southern american continents and the Caribbean island, but has been exported all over the world, first as a means of curbing the spread of mosquitoes by feeding on the larvae and then as a pet. Over time, guppies have found themselves in diverse environment, and some have undergone mutation of body parts just to adapt. So, the need for adaptation to their constantly changing environment has led to mutation in the guppies.
how does the bone matrix differ from the matrix of cartilage
Answer:
Cartilage and Bone are specialized forms of connective tissue. They are both made up of cells embedded in an extracellular matrix. Cartilage is thin, avascular, flexible and resistant to compressive forces. Bone is highly vascularize, and its calcified matrix makes it very strong.
Hope this helped!
Use week 17 vocabulary
part of Earth in which life exists including land, water, and air or atmosphere
A)
ecosystem
B)
community
C)
biosphere
D
population
Answer:
C
Explanation:
How many Earth years would you need to live in order to be two on Neptune?
Answer:
164.81 earth years
Explanation:
I looked it up
Which way does the sun’s gravity act on any body in orbit?
A. pulls it forward in its orbit
B. pulls it backward in its orbit
C. pulls it toward the sun
Answer:
pulls it toward the sun
Compare the environmental and societal impact of urban sprawl to upward growth
Answer:
Urban sprawl can also be called Urbanization and it means the movement of a population from the densely populated cities to the low populated areas around the cities which isn't usually well developed.
Urbanisation has a great impact on the environment because it leads to cutting down of trees which is also known as deforestation.
Deforestation is very harmful for the environment because it creates a form
of dis balance in the environment. Trees are very important to us humans because they provide us with raw materials and oxygen. This means we should always be mindful of deforestation processes.
The body breaks down food into nutrient molecules during _____. digestion absorption salivation peristalsis
Answer:
The answer is Digestion.
Explanation:
During digestion, enzymes in our body are used to break down large food molecules into smaller molecules for a better absorption. For example, amylase break down carbohydrate, protease break down protein and lipase break down fat.
Which human activity is correctly paired with the greenhouse gas that it increases?
Answer:
sewage treatment and nitrous oxide.
Explanation:
Hope this helped
:)
What can be done to conserve earths coal supply for future generations?
Answer:
a
Explanation:
if you invest in alternative then you save more and more coal
Explain why a swing will not stay in motion forever after you have given it a push. What happens to the mechanical energy of the swing?
Explanation:
As the pendulum swings back and forth, the balance between the two types of energy changes constantly. At some points in its swing, the pendulum has more kinetic energy. At other points, it has more potential energy. ... No pendulum can swing forever because the system loses energy on account of friction.
How do the genes in E. coli save energy?
Genes are turned on periodically.
Genes are never turned on.
Genes are turned on only when needed.
Genes are turned on all of the time.
I will give brainiest to whoever answers RIGHT NOW
Answer:
its C i took the test
Which of the following terms describes how often an allele is found in a
population?
O A. Allele frequency
B. Allele density
C. Allele strength
O D. Allele dominance
SIIRMIT
Asap please
Answer:
A. Allele frequency
Explanation:
Allele frequency is the fraction or percentage of a specific allele in the total number of alleles in a population.
Which statement about the pancreas is not true?
O A. It uses a feedback loop to control glucose.
B. It makes digestive enzymes for the small intestine.
O c. It makes hormones that are released on the skin,
O D. It releases glucegon and insulin into the blood.
Some organisms seem to have undergone very little evolutionary change
over huge spans of geologic time. One example is the shark. Shark
ancestry dates back around 425 million years, which is about 200 million
years before the earliest known dinosaur. In all, abut 2000 to 3000
species of fossil sharks have been documented. About 1100 species of
shark remain on Earth today. These sharks represent an ancient life form.
Why do you think the rate of evolution of the shark has been so gradual?
4 sentence
Are the finches that Charles Darwin studied on the Galápagos Islands an example of divergent evolution or convergent evolution? Give two point to explain your thinking.
Answer:
shark are slow evolving species because of lower gene flow and rate if reproduction.
Darwin finches undergo divergent evolution
Explanation:
Sharks have evolved slowly because of following reasons –
a) Lower rate of reproduction
b) Restricted gene flow because of isolated habitat such as stretches of deep water
c) Staying close to the eggs and hence guarding them throughout their life thereby allowing no cross mating.
d) Lower rate of mitochondrial DNA (mtDNA) evolution
Darwin’s finches show divergent evolution as different species of finches originated from a common ancestors. The beak size of finches vary form one species to other because of different diet habits
The picture shows a jar of honey.
Which statement is correct about this food?
Answer:
Can u pls show the statements
Complete the sentence using one of the
following words: reproduction, adaptation, or
homeostasis.
A(n)...........may include a structural,
physiological, or behavioral trait that improves
an organism's likelihood of survival and
reproduction
Kevin wants to lower his carbon footprint. What option should he choose?
A. eat less food
B.drink less water
C. carpool with his work colleagues
D move out to the country
Answer:
c carpool with his work buddies
Answer:
c
Explanation:
If you look up in to the sky on a clear,dark night you will see many stars.Put an X next
to each statement that describes the stars that are in the night sky.
A. Our Sun is a star.
B. Stars move across the night
sky.
C. Stars have nomass.
I. Stars eventually become
supernovae andexplode.
J. Youseeastarasitwaswhen
light left it, not as it is now.
D.All stars are the same
brightness.
K. Stars live forever.
L. Stars are very far away.
E. The inner core of a star is solid. M. Stars are larger than planets.
F. It is common for two stars to N. Stars twinkle.
orbit each other.
G. Stars are in galaxies.
O. Stars are the same color but
different temperature
g.
f.
n.
L.
m.
a.
b.
i.
should be right ♡
How can you make it safer to exercise on a hot day?
A. Do not exercise between 11 a.m. and 5 p.m., the hottest hours of
the day.
B. Wear loose-fitting clothes that allow sweat to evaporate.
C. Drink water before, during, and after a workout. Drink water at
least every 20 minutes while exercising.
D. All of the above.
We can make it safer to exercise on a hot day by Option(D) All of the above.
What happens to our body if we exercise on a hot day ?Exercising in hot weather puts extra stress and pressure on our body. If we don't take care when exercising in the heat, we risk serious illness. Both the exercise itself and the air temperature and humidity can increase your core body temperature. To help cool itself, your body sends more blood to circulate through your skin. If the core body temperature is high for a prolonged time, the person may loose consciousness and even suffer from cardiac arrest.
How to make it safer to exercise on a hot day ?First of all, we should not exercise between 11 a.m. and 5 p.m. as it as the hottest hours of the day and the person may have heat stroke. Even if we exercise, after avoiding the timing of the day, we should wear loose-fitting clothes that allow sweat to evaporate. Finally, the most important point is to drink water before, during, and after a workout. Drink water at least every 20 minutes while exercising.
Thus Option(D) All of the above satisfies our exercise on a hot day.
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This is a photo of a wolf-dog. This animal is the offspring of a gray wolf and a domesticated dog, the German shepherd. The wolf-dog you see here can breed and have pups. What conclusion can you make about the wolf and the German shepherd?
A) They are in the same classification domain.
B) The two animals are members of the same species.
C) The wolf and the dog must have similar reproductive cycles,
D) The wolf and the dog are closely related because they are both mammals.
Answer:
B)
Explanation:
their DNA are similar
they are able to reproduce
they are of same species
Answer: b!!
Explanation:
how has climate change affected ocean levels
Answer:
Climate change has caused ocean levels to rise higher.
Explanation:
Changes in wind strength during an El Niño affect surface currents, which affects weather patterns. In 3-5 sentences, explain why this is the case.
1. What can you find out from a model of seed?
A.The size of the seed
B.The shape of the seed
C.The structure of the seed
2. What causes a bee to move pollen?
A.The pollen is light and sticky.
B.The pollen has structures like wings.
C.The pollen has hooks that catch onto the bee.
Guys plssss help me with this...