|
|
| Answer the following:
|
| 1. What causes disaster like tornado? |
|
|
|
| 2. What causes acid rain? |
|
|
|
| 3. Mention one of the factors for floods? |
|
|
|
|
|
| Fill in the blanks: |
| Options: |
|
12 percent
|
poison
|
Humans
|
|
effects
|
trees
|
|
|
|
|
1.
________
are causing threat to planet earth.
|
|
2. Nobody can escape the
_______
of pollution.
|
|
3. Save the
_____
to save ourselves.
|
|
4.
__________
of the world population lives on mountains.
|
|
5. Polluted fish causes food
_______
.
|
|
|
|
|
|
|