Answer:
So that if we feel weak, energy is released through it so we can do work and do stuff like walk or think. It's like stored energy that can do things for the future.
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Subsoil is the layer of soil under the topsoil on the surface of the ground.
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Answer:
C. It may act as an insulator or a conductor.
Explanation:
Group B are the metalloids, so they have properties of both metals and nonmetals.
The answer is d because in both sides there are 1 magnesiums 1 oxygens 2 lithiums and 2 chlorines