Physics
The law of conservation of energy states that

Energy can either be created or destroyed
Energy can neither be created nor destroyed
Energy can either be created nor destroyed
Energy can neither be created or destroyed

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Physics
Solids have definite shapes.This is because

The forces of adhesion are large
The forces of cohesion of the molecules within are very much less in them
The forces of cohesion are very large
The forces of adhesion are less

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