Question: Choose your answer.

Which adaptation allows a walrus to stay warm in cold water?

OPTIONS:
- reddish coat
- bristly mustache
- wrinkled skin
- thick layer of blubber
My Answer: thick layer of blubber

Question: Choose your answer.

Which human organ system primarily exchanges gases between the body and the atmosphere?

OPTIONS:
- excretory
- nervous
- skeletal
- respiratory
My Answer: respiratory

Question: Choose your answer.

A salvage yard contains a mixture of iron, glass, aluminum, and plastic. Which property of iron does the salvage yard take advantage of when separating the iron from the rest of the materials?

OPTIONS:
- magnetic
- electrical
- ductility
- malleability
My Answer: magnetic

Question: Choose your answer.

Which characteristic helps a fox find food?

OPTIONS:
- sense of smell
- thick fur
- long tail
- pointed teeth
My Answer:
sense of smell