WHAT CAN BE INFERRED ABOUT WATER

63. - DE THI THU DAI HOC MON TIENG ANH VA DAP AN THAMKHAO
DE THI THU DAI HOC MON TIENG ANH VA DAP AN THAMKHAO
63.What can be inferred about water?a. The amount of water on earth is always the same.b. Water will probably be exhausted.c. Water can be used once only.d. Most of the water we use is rain water.