関連ワード:
of the total water on earth freshwater is of the total water on earth freshwater is class 8 of all the water on earth fresh water is ____ percent what percentage of the total water on earth is fresh water what percent of the total water on earth is freshwater of all water on earth is fresh water what percent of earth's total water is salt water what percent of total water on earth is fresh water what percent of all the water on earth is freshwater what percentage of all the water on earth is freshwater
