During meiosis, homologous chromosomes can exchange DNA in a process known as —

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Answer 1

Answer: During meiosis, homologous chromosomes can exchange DNA in a process known as : Crossing over Crossing over is one of the final phase of genetic recombination, which happen in Meiosis during a process called Synapsis. It occurs when matching part of matching chromosomes broke and reconnect with other chromosomes
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Answer 2

Answer:

Answer:

During meiosis, homologous chromosomes can exchange DNA in a process known as : Crossing over Crossing over is one of the final phase of genetic recombination, which happen in Meiosis during a process called Synapsis. It occurs when matching part of matching chromosomes broke and reconnect with other chromosomes

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Explanation:

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You have examined several body systems that rely and work with each other in order function properly. One very important task that amphibians and all living things need is to efficiently exchange gases in order to survive. Explain in a brief essay how the cardiovascular system and respiratory system work with each other based on your experience and observations from this virtual lab.

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The task of the respiratory system is the exchange of Oxygen and Carbon Dioxide within the body; however, the respiratory system alone has no mechanism for the transfer of oxygen from the lungs to the body for absorption and transfer of carbon dioxide from the body for expulsion. The cardiovascular system assists in this by moving oxygen-saturated blood from the lungs to different parts of the body and carbon dioxide rich blood from the body to the lungs.

Lunar phases occur when the Moon appears to change shape as seen from Earth. What causes different phases of the Moon? Select one:
a. the tilt of the axis of Earth
b. the shadow of Earth falls on the Moon
c. the alignment of the Sun, Moon, and Earth in a straight line
d. the amount of the sunlit side of the Moon that faces Earth

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Lunar phases are visible according to the amount of sunlit side of the moon facing the earth. So the correct option is D.

Why are lunar phases formed?

The moon does not produce any light of its own and only reflects the light falling on it from the sun. The sunlight hits all the sides of the moon but we can only see it when it falls on the side, or the part of the side visible to us.

So, when sunlight hits the far side of the moon, it is called a new moon. The far side is the side of the moon not visible from earth. Therefore we are unable to see the moon when this happens.

But when sunlight falls and reflects from the near side of the moon, a bright round structure of the moon is visible from the earth. This is called full moon.

Other than that there is the waning crescent, waxing crescent, first quarter, waxing gibbous, waning gibbous and third quarter. All these depend on the side of the moon visible from the earth when sunlight falls on it.

When, during the course of the revolution, the earth comes between the sun and moon blocking sunlight on the moon, a lunar eclipse occurs.

Therefore, the correct option is D.

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the human activity that creates the least threat to global stability is : Reuse of Plastic bags.
Plastic bag need a lot of time to be degraded in the soil which will create a threat to the environment. Reusing plastic bag will reduce this threat.

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Which method to determine population size is the least invasive

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It seems that you did not provide possible answers, but the mark recapture method is one method that is not very invasive. The population size is estimated by marking a certain number of individuals and releasing them into the wild, followed by a second capture later on. The members captured the second time with the markets from the original capture are used to estimate population size in the formula s*n/x where s and n are the first and second captured population sizes and x is the number of marked inidividuals from the second capture.

_________ are coral reefs surrounding a lagoon.a. Atolls
b. Escarpments
c. Artesians
d. Playas

Answers

Answer:

The correct answer is option A, Atolls

Explanation:

Atolls are coral reef island which surrounds lagoon. They are made up of volcanoes that resides under the water and thus these Atolls also remain hidden inside the water. This coral reef is also known as fringing reef because it forms fringes while surrounding an island below the water body . Atolls are involved in saving the island or sea.

Atolls are the only one here that has anything to do with coral. Playas are basically dried up lakes, artesians are like natural wells, and escarpments are the separation between different geographic elements of different heights.

How do biotic factors (like us) rely on abiotic and other biotic factors? PLEASE HELP!!

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Biotic things depends on other biotic things for food and resources and Biotic depends on abiotic for a living because of the sun's energy, and oxygen. Without oxygen and energy from the sun, there wouldn't be living things because we need the oxygen.

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