26. On the diagram below, draw arrows that show the forces acting on the falling acorn. Label each arrow with the name of the force.

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

it's c. elements are placed in rows based on how may valencies electrons have.

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