Pollution

123456
Across
  1. 3. a place where lots of animals an plants live together
  2. 4. can be placed on the roof of houses or sheds to generate energy
  3. 5. dangerous gas that comes from slurry
  4. 6. waste from cattle collected in a tank under the shed
Down
  1. 1. oil,gas,petrol, diesel are all examples of this
  2. 2. wind is an example of this type of energy