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Chemical energy --- electrical energy --- light energy
The correct option is A.
Living organisms depend on their environment to survive, when there are changes in the environment which are not favorable to the living organisms, it will eventually leads to the wiping out of the living organisms. As time goes on and the environment recover, the living organisms that will be found in the new environment are those who will be able to survive in it.
Answer: Osteoclasts are the bone cells that break down bone.
Explanation:
Producers, because they're the start of the food chain and without them there will be no food chain.