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erma4kov [3.2K]
3 years ago
12

Which is a characteristic of a capillary? A. Carries blood away from the heart. B. Has valves to direct blood flow. C. Controls

blood flow to the organs. D. Has walls that are one cell thick
Biology
1 answer:
viktelen [127]3 years ago
5 0
I think is letter D. Has walls that are one cell thick
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What is the key factor in determining the habitable zone of a planet
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Answer:

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What difficulty may result if a chromatographic column is not placed in a vertical position?
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5 0
4 years ago
At the onset of the embryonic period, the _____ appear(s). it will eventually become the neural tube.
fomenos

Answer;

Primitive streak.

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