Final answer:
Animal cells avoid popping in a hypotonic environment by having a tough cell wall or using contractile vacuoles to remove excess water.
Step-by-step explanation:
Animal cells avoid popping in a hypotonic environment through various mechanisms. One way is by having a tough cell wall that prevents water from entering the cell beyond a certain point. This is seen in plant cells, which tend to do best in a hypotonic environment. Another way is by using contractile vacuoles, which remove excess water from the cell. Organisms that live in a hypotonic environment, such as freshwater, have contractile vacuoles to prevent their cells from taking in too much water. These mechanisms help animal cells survive and maintain their shape in hypotonic environments.