Physics
The earth is a

Good absorber and good radiator of heat
Non-absorber of heat
Bad absorber and bad radiator of heat
Good reflector of heat

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Physics
Solids have definite shapes.This is because

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

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