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topjm [15]
3 years ago
6

"No biological system is completely closed, thus some movement of nutrients in and out always occurs." Is this statement true or

false?
Biology
1 answer:
Gemiola [76]3 years ago
3 0

Answer:

TRUE

Explanation:

No biological system is completely closed.

A nutrient cycle is the movement and exchange of both organic and inorganic matter back into the production of matter. This cycle is a recycling system which always occurs no matter what.

In a system that looks closed (closed loop), nutrients may be limited because they are not cycled through  the system fast enough and/or it is not possible to compensate for deficiencies by  migration.

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miss Akunina [59]
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(Future reference: Haploid means half, half the # of chromosomes in the nucleus. Diploids means duplicate, COMPLETE necessary set of chromosomes).

Hope it helps!! :)
8 0
3 years ago
Which of the following examples is a function of your circadian rhythm?
borishaifa [10]

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7 0
3 years ago
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Need help with this!!!
Alex73 [517]
<h2>Answer:</h2>

The correct answer is option D which is that endocrine control can control melatonin.

<h2>Explanation:</h2>

As melatonin is released from pineal gland which is a part of endocrine system.The endocrine system is a chemical messenger system which has glands, which secretes certain chemicals known as hormones.These hormone acts on different organs to control different metabolisms in body.So melatonin which is hormone can be controlled by the endocrine system.



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3 years ago
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ryzh [129]
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