Question: Choose your answer.

When an earthquake wave passes from the crust to the mantle, the wave
My Answer: changes speed.

Question: Choose your answer.

Where does oxygen-rich blood go after leaving the lungs?
My Answer: the heart.

Question: Choose your answer.

Thousands of years ago, several species of large mammals existed in North America. These species became extinct not long after the first human settlement of North America. Which human activity most likely contributed to the extinction of these mammals?
My Answer: hunting

Question: Choose your answer.

All plants and animals have mechanisms that
My Answer:
transport nutrients