What term describes protozoa that are not visible to the naked eye? A. microscopic
B. telescopic
C. macroscopic
D. parasitic

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

What is the inability of an individual or a society to achieve a minimum standard of living known as ?