More Benchmark Questions to review

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When we measure the amount of nitrates what do we measure?

If a scientists finds the fossil of a trilobite in the bottom rock layers and a mammal a few rock layers up, what could be concluded from this evidence?

What does turbidity measure?

Which of the following is the process that water vapor goes through when it changes from a gas back to a liquid water droplet?

Who is responsible for making sure that water in the U.S. is safe to drink?

Which of the following would we measure to give us a better understanding of how healthy a body of water is?

When we measure the pH of water, what do we measure?

Scientists think that whales and dolphins may have evolved from a similar ancestor. Which of the following supports this?