(i)

Effects of air masses on the environment

1. Destruction of biodiversity
2. Destruction of the ozone layer
3. Makes environment dry/moist/influences humidity
4. Can create storm where two air masses of different temperatures meet
5. Can change the weather/climate
6. Makes environment hot/cold/vary environmental temperature
7. Causes acid rain, etc.

(ii)

Ways by which global warming can be reduced

1. Afforestation/planting of trees
2. Use of LPG (instead of wood for domestic fire)/reduce use of fossil fuels/Using renewable energy/Using solar energy to produce electricity
3. Use of HFCs instead of CFCs
4. Avoid/reduce bush burning
5. Avoid using driers to dry clothes/Use open air
6. Reduce the use of processed foods/eating plant rich diet
7. Using energy efficient appliances
8. Minimizing the use of cars/vehicles/automobiles
9. Replacing filters in air conditioners

(i)

Greenhouse effect is the trapping of infrared radiations in the earth's surface by gases/carbon dioxide/substances making the earth warmer.

(ii)

Climate change is a large scale or long term/changes in the earth's weather patterns/average temperature.