Environmental protection

1. __________ is much healthier than driving, and it doesn’t pollute the air.

A. Baking

B. Biking

2. The gradual increase in the Earth’s temperature and the temperature of the oceans is known as <<global _______>>

A. warmth

B. warming

3. _______, which is partly caused by exhaust fumes from cars, is a very big problem in many cities across the world.

A. Smog

B. Smoke

4. One way to reduce the amount of garbage is by ______

A. Resizing

B. Recycling

5. To use something again = to _________something

A. Refuse

B. Reuse

C. Reflect