During the winter, this species of hare has white fur, but in the summer, it has brown fur. What environmental change may have led to this hare's fur color?

drought
snow cover
asteroid impact
global warming

snow cover

Explanation:

To blend in with the ground in the warmer months, snowshoe hares sport brown fur. In the winter, they turn white to camouflage with the snow

atp is used for energy.

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.