Q: Answer the question

When water vapor rises and cools, the liquid water in the air comes together forming

A: clouds.

Q: Answer the question

To safely conduct an experiment using chemicals, what should students always do?

A: Wear safety goggles.

Q: Answer the question

Signs in many stores and restaurants warn that microwaves are in use. What is the main reason for this warning?

A:
Some people have pacemakers that may be affected by microwaves.