Fish have scales that enable them to live in a water environment. This is an example of Multiple Choice
A:homeostasis.
B:adaptation

C:metabolism.

D:development

E:cellular organization

Adaptation

Explanation:

A thin durable layer that develops over fish's skin is called scales. Adapting marine habitat means that they will have Fins and the hard coating scale that enable fishes and other animal adjust to the condition of the water  environment.

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.