The number of connections among species
Drives deep ocean currents
Most of it follows its cycle, going back to the atmosphere.
The image below, shows you how the nitrogen cycle is.
Hope it helped,
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Answer: C
Explanation: Water is a polar molecule because the electrons of the hydrogen atoms get "pulled" towards the electrons of the oxygen atom. Which is both positive and negative on opposite ends.
It could be B as well but, I believe it's C
The four polysaccharides are glycogen, starch, cellulose, and chitlin. You consume them. They are sometimes artificially made or produced by your body.