Ecological equivalents are different species that occupy the same niche, but
a. in the same geographical region.

b. the same population.

c. different geographical regions.

d. the same lake or stream

Which organelle releases chemicals that break down large food particles into smaller ones?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half