Biology, 05.06.2020 04:57 allisonpierce1787

LAST QUESTION WILL GIVE BRAINLIEST 1. Which two substances have parts of their cycles in which the substance must be "fixed"?

A) nitrogen and water

B) sulfur and oxygen

C) water and phosphorous

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LAST QUESTION WILL GIVE BRAINLIEST 1. Which two substances have parts of their cycles in which the...