What percent of water is not easily accessible or usable on earth?
*a. 6% b. 12.5% c. 50% d. 99% subtract the answer from the last question from 100%. what does the remainder represent and what are the sources of this percentage of water?
a. 97% rivers only b. 1% lakes, rivers and ground water *c. 99.4% lakes only d. 50% atmosphere and soil moisture you.