Many chemicals are used to kill insects and protect plants. how could the removal of insects upset the balance of the ecosystem? a) the plants would rapidly decrease in number. b) animals that eat the insects would die as well. c) the animals in the ecosystem would eat all the plants. d) insects from other regions would replace the killed insects.

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The answer is B.)Animals that eat the insects would die as well.

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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.