Answer:
The two main adaptations that desert animals must make are how to deal with lack of water and how to deal with extremes in temperature. Many desert animals avoid the heat of the desert by simply staying out of it as much as possible. ... The kidneys of desert animals concentrate urine, so that they excrete less water. Hope this helps!!
Explanation:
Chewing a saltine cracker is a physical change
I would say estuary, because that's where a fresh water river and an ocean meet, and that leads to a transition between salt to fresh water.
