Q: Answer the question

Which human body system produces the hormones that regulate growth?

A: endocrine

Q: Answer the question

Certain fossils can be used to help determine the age of the rock layer in which the fossils are found. Which type of fossil is best to use when making this determination?

A: index fossil

Q: Answer the question

Why is water considered to be a renewable resource?

A:
Water can be used over again.