1. Which of these may lead to destruction and imbalance of ecosystem?

A. animal conservation
C. reforestation
B. overfishing and overhunting D. waste segregation

2. Why are estuaries important to our environment?

A. help filter pollutants in the water.
B. provide homes for many species of wildlife.
C. important nursery areas for a variety of marine organisms.
D. All of the above

3. What can damage life in estuary?

I. Land development
III. Agricultural wastes
II. Industrial wastes
IV. Proper waste management
A. I only
B. l,ll and lll
C. II, III and IV
D. I, II, III and IV

4.At your home,what can you do to help protect our intertidal zone and estuaries.

A.Consume so much water in your daily life.
B.Always use chemical-based household products.
C.Always use synthetic fertilizers to your plants.
D.Dispose toxic products properly.


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