In which form does usable energy enter the earth's system and to what form of energy is all of this energy finally converted?

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.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Dna replication occurs in preparation for