What happens when u don't drink water for 2 or 3 days?

answer: you become dehydrated

explanation:

this is due to the fact that you body is made of 65 percent water and needs ot to function

answer:

if you stop drinking water for 2 or 3 days,   your energy drops and your mood becomes more irritable. a dehydrated brain actually works much harder to achieve simple tasks, than when you are well hydrated. it even temporarily shrinks

explanation:

the correct answer is:

a population changes in response to a change in the environment.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: