<span>They need to adapt to changes in temperature because under the water it may be warm while the surface is cold and water or moisture because the tide is constantly changing so sometime they may have water while other times they might not.</span>
The decrease of predators would make the elk population thrive, because there would be nothing to hunt them down. And with an increase of food, the elks would have enough to eat therefore the elks would not die from hunger.
Observation
An observation is information that is collected by using one of your 5 senses