5. Which activity caused change that has harmful effect in the environment?
a vegetable gardening
b. making clay pots
c. landscaped land
d. dynamite fishing
6. Which of the following changes in the materials is NOT harmful to the
environment?
a. Cutting down trees
b. Throwing garbage in the canal.
c. Using eco bags when shopping.
d. Dumping hospital wastes into the river.
__7. Which activities are useful in the environment?
1. logging
II. Mining III. Reforestation IV. Composting
a. I and III
b. I, II and III
c. III and IV
d. II, III and IV
8. What is/are the harmful effect of forests fire?
1. air pollution
III. abundant food source
II. drought
IV. destruction of habitat of some animals
a. I, II and III
b. I and II
c. II and IV
d. IV only
Study the pictures below.
9. What harmful effects the factory might have to the
environment.
a. Clean water in the environment
b. It gives people the opportunity to work.
c. Smoke affects the people in the area.
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d. Production of food and materials needed for everyday living
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10. Cutting down of trees affect the environment, except
a. Flooding
b. Exposing soil to heat and rain.
c. Loss of habitat for millions of animals
d. Improved habitat for many species of plants and animals.
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