Which type of molecule that can be found in living things lacks carbon atoms?

Water or H2O. The molecules involving water displays the absence of carbon atoms which is then disassembled primarily by cells thru the process of metabolism and then changed or mixed with other substances to form useful supply of cell activities. 
Proteins are from amino acids which has carbons in their composition. As well as carbohydrates and lipids

Nimbostratus is the correct answer.
explanation: nimbostratus clouds are the type of clouds that are mostly likely present on gray, rainy day. these clouds produce continuous rain, snow and there is no thundering or lightening either.

Hello we have the same names lol.biology is the study of living beings , that is, all plants and animals including humans.