3) Why do boats float in water? A Boats are made of wood which make them float. B. Boats have plastic strings which make them float. C. Men use paddles to make boats float D. The sea breeze makes the boats float 4) How will you dispose decaying waste materials commonly found at home? A. Make them into compost fertilizer, B. Throw them into the river to feed the fishes. C. Keep them in the cabinet and use them again. D. Mix them with the non-decaying waste materials. 5) A glass of water is spilled on the table. What are you going to use if you want to wipe dry the table? A. cellophane B. plastic mat C. rubber band D. rug​