What action by an individual person is most likely to have a positive impact on an ecosystem?
OA
planting pine trees to be sold as Christmas trees on private land
planting native plants in a vacant lot
planting a single economically valuable crop on 30 acres of land
OD
planting exotic shrubs in a community park

answer:

planting native plants in a vacant lot

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.

carbon atoms, hydrogen, oxygen, and nitrogen.