The percentage of water in a living organism is approximately: (in $\%$)

What is the percentage of water in the human body?

What is the percentage of water in the composition of a living organism (in $\%$)?

Approximately $98 \%$ of the mass of every living organism is composed of just six elements,including carbon,hydrogen,nitrogen,oxygen,and which of the following?

Which element is found in abundance in eukaryotic cells?

When a living tissue is ground in trichloroacetic acid to form a slurry and filtered through cheesecloth or cotton,the $.....$ passes through the cheesecloth or cotton.