9. What is our role to help protect and conserve our environment?
A. Allow the farmers to use pesticides to their plants.
B. Practice the recycling, reusing, and composting at home.
C. Buy imported products and show to everyone what you have.
D. Do not turn off lights when not in use especially when it’s time to sleep.

10.What is the role of estuaries and intertidal zones in our ecosystem? It ________.
A. is the catch basin of waste materials
B. filters the dirt before the freshwater enters the seas or oceans
C. acts as buffers, they can’t protect lands from crashing waves and storms
D. serves as passage way of all the garbage and toxic materials from the rivers

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