are collections of nephrons located beneath the renal cortex ?

A. renal cortexes

B. real capsules

C. renal medullae

D. renal pelvises

How can you tell the difference between rough er from smooth er?

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present