1. to survive, all animals must do all of the following except
obtain

oxygen
eat
breathe air
eliminate waste

2. which of the following is an adaption that an animal obtain food?

jet propulsion
hibernating in the winter
sweating
sharp, narrow teeth

3. which of the following adaptions would an animal avoid predators?

echolocation
hibernation
changing color to blend in with surroundings
coming to the surface to breathe

4. how do marine mammals breathe?

All answers to this assignment.
1. To survive, all animals must do all of the following except 
C. breathe air

2. Which of the following is an adaption that helps an animal obtain food?
D. sharp, narrow teeth

3. Which of the following adaptions would help an animal avoid predators?
C. changing color to blend in with surroundings

4. How do marine mammals breathe?
C. They come to the surface and breathe air.

5. How do insects get the oxygen they need?
D. through holes in their skin.
4. How do marine mammals breathe?

Sorry  i don't understand can you rephrase that