Question: Choose your answer.

What is the primary function of skin cells?
My Answer: to provide a physical barrier to the body

Question: Choose your answer.

Scientists wonder how the Egyptian pyramids were built. They think that the huge blocks of stone may have been put into place by pushing them up a sloping pathway. The pathway is which type of simple machine?
My Answer: inclined plane

Question: Choose your answer.

An ocean, a forest, and a grassy meadow are each examples of a complete ecosystem. Complete ecosystems contain only
My Answer: living and nonliving things.

Question: Choose your answer.

Which characteristic is most beneficial for an animal living on a snowy mountain?
My Answer:
thick fur