B. It moves substances against a concentration gradient. It requires energy from the cell to.
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The answer is a dense substance that is hard and incompressible.
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
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Heat cause domains of magnets atoms to lose alignment
The answer is c because:
Work done =force x distance
