Less than 4% of the world's water is fresh water and 2/3 of it is underground
Answer: A
Explanation:
"There are six main elements that are the fundamental building blocks of life. They are, in order of least to most common: sulfur, phosphorous, oxygen, nitrogen, carbon, and hydrogen." "The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you." Hope this helps :)
