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Vsevolod [243]
3 years ago
8

What are test tube babies?

Biology
1 answer:
garik1379 [7]3 years ago
3 0
Test tube babies are a babies conceived by in vitro fertilization.
in virto fertilization is a process by which an egg is fertilised by sperm outside the body.
hope this helps :)
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Oxygen-rich blood is sent to the rest of the body through the _____.
meriva

Answer:

pulmonary vein

Explanation:

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3 years ago
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What types of life could be on other planets ? Marking branliest !
Amanda [17]

Organisms that do not depend on oxygen for survival can be found on other planets.

<h3>Could life exist on other planets?</h3>

The solar system is composed of the earth and other planets having the sun as the center. This model is what we generally refer to as the heliocentric model of the solar system.

Life does exist on other planets apart from earth. However, in other planets, oxygen is in limited supply hence only the organisms that do not depend on oxygen for survival can be found on other planets.

Learn more about living things: brainly.com/question/17074249

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Explain the steps of the life cycle of a star. Beginning with a nebula and ending with old age/death of a star, explain each ste
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Fourth is the Red Dwarf, which is very cool, faint and small star.
Fifth is White Dwarf, this is a very small and the last stage in the life cycle of a star.
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21. The diagram shows oxygen moving into an animal cell.
arsen [322]

Peripheral tissues receive oxygenated blood via the circulatory system. Delivering oxygen to cells, oxygen diffuses through tissues along a gradient of high to low amounts. Thus, option B is correct.

<h3>What is the movement of oxygen in cell?</h3>

Hemoglobin and oxygen interact chemically inside the red blood cell, where it is carried both by free diffusion and hemoglobin-facilitated diffusion. In blood plasma, oxygen is transferred by free diffusion and convection through cell membranes.

Therefore, The concentration of oxygen will be lower inside the cell compared to outside the cell.

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What are the characteristics necessary to be considers a living thing
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That thing would need to rely on some source of food to live. Plants are living and they rely on sun and water. Humans rely on calories.
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3 years ago
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