4. The following activities can be done to pieces of wood, which of these can cause
harm to the environment?
A. burning pieces of wood to be made as charcoal
B. shaping pieces of wood to be made into a chair
C. using pieces of wood to be made as furniture
D. forming pieces of wood as junior fence
5. Your father has celebrated his birthday yesterday, there were many empty plastic
bottles of soft drinks left. What is the best way you can do with these empty plastic
bottles in order to protect the environment?
A. throw the empty plastic bottles into the seashore
B. make the empty plastic bottles as flower vases
C. dump the empty plastic bottles in the landfill
D. burn the empty plastic bottles
6. Families in rural areas do the laundry in the river. In doing this, which of the
following should they avoid?
A. Throwing of detergents into the river.
B. Using the river water in rinsing the clothes.
C. Putting the washed clothes in the big stones along the riverside.
D. Bringing home the empty plastic containers of the detergents used.
7. When food spoils, you cannot eat it anymore, or else you will be poisoned. What is
the best way to make spoiled food useful to the environment?
A. use it for composting
B. reheat the spoiled food
C. feed the spoiled food to house pets
D. throw it in the non-biodegradable garbage bin​