Answer:
lipids are fatty acids that are water insoluble
Explanation:
oils,waxes,phospholipids
Answer:
Nitrogen thet cannot be used by organisms. C.
Explanation:
Free nitrogen is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond. Because it is very stable, N2 is typically nonreactive, and takes a lot of energy to break them apart. Among these are the amino acids necessary for life to begin and which are the building blocks DNA is made from. Basically, any nitrogen that is in an organic compound is considered “fixed” nitrogen and N2 is considered to be “free” nitrogen
This might help:
https://quizlet.com/1965478/environmental-health-test-1-flash-cards/
Day and night is caused by the earth rotating on its axis throughout 24hrs
