Question: Choose your answer.

A scientist wanting to document a change in a river's flow pattern should observe a river over a period of
My Answer: years.

Question: Choose your answer.

Which best explains the importance of nitrogen in the cycling of energy and matter?
My Answer: Nitrogen increases protein production in plants.

Question: Choose your answer.

Large populations of tortoises inhabited the Galapagos Islands before humans. When humans settled on the islands and introduced goats, the number of tortoise declined. What is most likely the explanation for the decrease in the tortoise population?
My Answer: Goats compete with tortoises for vegetation.

Question: Choose your answer.

A student wants to look under a heavy rock. Which simple machine would be BEST to use to lift the rock?
My Answer:
Lever