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Zigmanuir [339]
2 years ago
5

Is the Sun a planet? Why or why not? (3-4 sentences)

Biology
1 answer:
Molodets [167]2 years ago
4 0

Answer:

No

Explanation:

The Sun is a star there are lots of stars,but the Sun is the closest one to Earth.It made from gases and it always burning

Planets are:Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus

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The structure that prevents backflow of blood into the left atrium is the . The vessel that carries oxygen-rich blood to tissues
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The structure that prevents backflow of blood into the left atrium is the mitral valve.

The vessel that carries oxygen-rich blood to tissues is the aorta.

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The structure that is located anatomically between the aorta and the left ventricle is the Aortic semilunar valve.

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The aortic semilunar valve is located Aortic semilunar valve is the half-moon shape valve present between the left ventricle and aorta to prevent the black flow of blood to the left ventricle.

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