The Cycles of Matter

Question 7 • CA-Chemistry in the Earth System B - NHA 25/26

Check the items you included.

Answer

Bacteria perform nitrogen fixation.

More bacteria perform nitrification.

Nitrogen, in usable form, is taken up by plants and assimilated into their proteins (becoming part of the plant).

An animal eats the plant and the nitrogen becomes part of the animal’s proteins.

An animal dies and decomposes, or excretes waste, returning the nitrogen to the soil.

The Cycles of Matter

The Cycles of Matter

The Cycles of Matter