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gladu [14]
3 years ago
14

Blood returning to the mammalian heart in a pulmonary vein drains first into the _____.

Biology
1 answer:
WARRIOR [948]3 years ago
6 0
Is there like options in this question?
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Which selection from the article BEST supports the idea that the sun is necessary to the Earth?
LenKa [72]

Answer:I believe the answer is A

Explanation:

B and C have nothing to do with how the sun helps or is a necessity. D only talks about the life span of the sun not how it is necessary for the earth. A is the only answer that makes sense because it gives examples on how the sun helps the earth as well as human kind.

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How does the moon affect the Earth?
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For the following question, match the key event of meiosis with the stages listed below. I. Prophase I V. Prophase II II. Metaph
Andrei [34K]

Answer:

VII. Anaphase II

Explanation:

During metaphase II, fibers of the spindle apparatus drive chromosomes to the cell equatorial plane, where they line up. Sister chromatids are holden together until they reach <u>Anaphase II</u><u>,</u> during which specialized enzymes break the bonds between chromatids and separate them. Each chromatid migrates to one of the poles. In telophase II, the new chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole

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2 years ago
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ioda

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3 years ago
What describes something in nature and predicts how it will behave without explaining why?
riadik2000 [5.3K]
Scientific law.

A scientific law describes something in nature and predicts how it will behave without explaining.

This is because before a scientific law has been made, numerous observation has been done under different situations. The scientific law is established when a natural event invariable occur given a set of circumstances. 
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3 years ago
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