Drag the tiles to the boxes to form correct pairs. Match the structures of the male reproductive system to their functions.

epididymis
testes
scrotum
penis
seminal vesicles
production of fluid that nourishes sperm
arrowBoth
protection and temperature maintenance of the testes
arrowBoth
delivery of sperm to female reproductive system
arrowBoth
production of sperm and testosterone
arrowBoth
storage and maturation of sperm
arrowBoth

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

currents is the correct answer.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.