Q: Answer the question

Which property of water can cause a rock to break apart?

A: Water expanding as it freezes.

Q: Answer the question

Some plant cells are coated in a waxy layer that prevents water loss. This specialization is found in which plant cells?

A: cells on the plant surface

Q: Answer the question

Scientists estimate that Maryland contains more than 850 million tons of coal. Coal is most commonly used to produce ___.

A:
electricity