D, because they produce the food for the consumers, like grass.
Answer: Deep ocean currents are affected by temperature but not by salinity.
Explanation: I think it's this because I know it takes a while for deep ocean currents to move so it isn't the first one.
Answer:
Enzymes contain a globular protein part called apoenzyme and a non-protein part named cofactor or prosthetic group or metal-ion-activator.
Depending on the structure of cells (shapes and organelles) we can differentiate cells and therefore create different groups and classifications based on their differences and functions.
The eukaryote-prokaryote division bases itself on the possesion of a nucleus that creates a boundary for the genetic materifal. In this case, eukaryotes have it while prokaryotes don't.
Hope it helped,
BiologiaMagister