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Nimfa-mama [501]
3 years ago
15

What does the circulatory system do??

Biology
2 answers:
jonny [76]3 years ago
8 0
answer: the circulatory system helps transfer oxygen and also delivers nutrient molecules
frez [133]3 years ago
8 0

 Moves blood around the body

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One gamete is formed during:
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Answer: Oogenesis

Explanation:

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In human reproductive system one mature ovum is produced from four haploid cells during meiosis. This ovum is very large and it unite with the sperm to produce zygote.

There are three stages of Oogenesis, the multiplication phase,the growth phase and maturation phase.

In the multiplication phase, the germinal cells divide to form oogonia. The oogonia multiply and form oocytes. The oocytes pass through the growth phase and mature to form ovum.

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Which of the following is a biotic factor within an ecosystem?
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Answer:

c. is a biotic factor within an ecosystem

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