Answer:
There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.
That looks like cells of a multicellular organism, so B.
Answer:
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Explanation:
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4.The other light bulb will stay on and glow brightly.