13. Explain six effects of water pollution in Tanzania.

Explain five methods to prevent terrestrial pollution.

 Describe five causes and effects of soil pollution.

 Describe the cause, two effects and measures to be undertaken in order to prevent/reduce the amounts of acid rain.

(i) Name three gases which should not be produced in order to prevent the destruction of ozone layer. 

 (ii) List and explain three effects of ozone layer depletion.