PLSSS HELP GIVING BRAINLIEST Which three actions can harm the stability of an ecosystem? A. Applying a lot of fertilizer on a farm B. Introducing a new species on purpose C. Using fewer pesticides on a farm D. Cutting down all the trees in a forest​

its a,b,d

Explanation:

B and D and C

Explanation: I’m just smart kid

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.