When the fish is put into fresh water, suddenly the concentration around them is very low and the water potential is extremely high. Water will now move from the relatively high water potential in the water to the relatively low water potential in the cells, the cells start to burst and the fish dies.
This squirrel lives in a forest and eats only acorns. <span>The squirrel will starve if it can't find enough food. </span>
Is Punnett Square what you are looking for?
Answer:
Exothermic because it doesn't take place inside something, rather on the outside. :)