Carbon is transformed into stored energy in what process

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.