remove all animals from the prairie by clicking the minus (-) button next to each animal many times click Advance year 20 times does grass survive by itself?

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!

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.

the correct answer should be false

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