Consider this animal cell. Which organelles are labeled D, and what is one feature that distinguishes them from the other labeled organelles?

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.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.