The reactions involving most chemical compounds in living systems depend upon the presence of
(A) sulfur as an enzyme
(B) water as a solvent
(C) salt as a substrate
(D) nitrogen as an energy carrier

HELP WHICH ONE?

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Actual age your first developed of age well comparison age refers to absolute age true or false

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.