Q: A car skids along the road and smoke appears to be coming from under the tires. The heat that produces the smoke is caused by
A: friction
Q: Radio signal interruption sometimes causes a humming or buzzing sound. These sounds are most likely caused by
A: electromagnetic waves.
Q: Which is needed for both boiling and melting to occur?
A: heat
Q: In flowering plants, what structure containing DNA is transported from one plant to another?
A:
pollen