Me asap the main threats to freshwater species include all but one of the following. that is a) disease. b) pollution. c) habitat change. d) invasive species.

what is the aerea shown

explanation:

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.