An example of a grad-school level question?
A squid is an animal that lives in the ocean. It pumps a stream of water out of its body, causing it to move rapidly. Which of the following mechanical systems moves in a way most similar to the squid?

An example of a grad-school level question?
A student is measuring the distance a car travels down a ramp using yards. Which measurement is most similar in length when using the metric system of measurement?

An example of a grad-school level question?
Measurements of carbon dioxide concentrations in the air taken over the past decade have shown a

An example of a grad-school level question?
A decomposer is an organism that