Q: Fact: a hot substance is a source of heat
Question: Lucy came in from the cold and can's stop shivering. It might help her to sit near

A: a running boiler

Q: Fact: large trees block sunlight from reaching the ground
Question: If the ground is fully shaded, and plants there barely grow, likely the reason is

A: oaks there are mighty

Q: Fact: Earth 's magnetic patterns are used for finding locations by animals that migrate
Question: Some birds find locations with

A: magnetic patterns

Q: Fact: An example of protecting the environment is reducing the amount of pollutants
Question: A person wanting to protect the environment could avoid

A:
smoking