Meanings:
Amazing = wonderful Threat = harm
Drought = very less rain Yield = give
Famine = very less food Disposal = use and throw
Debris = pieces Regulate = control
Disaster = tragedy Rubbish = trash
Produce = make something Toxins = poisons
Source = something for use Pollution = harmful litter
Oxygen = the gas which we breathe to live      
Answer the following:
1. What are the uses of forests?
2. Write about oceans and their uses.
3. How do we pollute the mountain lands?