An organism that can make its own food is called a
a. consumer.
b. decomposer.
c. producer.
d. scavenger.

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.

six grader is what i am ssorry