Available Answers

1. 1.

   Name three diseases which occur because of waste accumulation on land.
2. 2.

   Name two diseases which are spread through pet animals.
3. 3.

   Name three water-borne diseases.
4. 4.

   Name two common diseases caused as a result of gaseous pollution.
5. 5.

   How does acid rain affect humans?
6. 6.

   Name three greenhouse gases.