Environment

123456789
Across
  1. 5. a type of energy from the Sun.
  2. 7. the surroundings we live in.
  3. 8. a type of aeriform fossil fuel. Helium is a type of … .
  4. 9. a type of energy that can be regenerated.
Down
  1. 1. is something that puts you to the test, like running your first marathon.
  2. 2. dioxide is also called CO2.
  3. 3. is a state of being informed.
  4. 4. a type of solid fossil fuel.
  5. 6. is a dry season without rains.
  6. 7. toxic gasses produced by cars, planes, factories.