Answer:
Molecules are two or more atoms chemically joined together
Compounds are two or more different elements joined together chemically(heteronuclear or homonuclear).
Explanation:
All compounds are molecules, but not all molecules are compounds. a molecule can be made of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule, all compounds are made up of two or more different types of atoms.One that is used a lot is water(H2o)
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As we know ~
Gravitational Force acting on two objects can be easily represented by formula :

so, from above we get :

We can conclude from derived information that, Gravitational force is inversely proportional to the distance between the objects. so if the objects move closer to each other. value of r decreases. hence we can say that Gravitational force increases.
Therefore, the correct choice is A. It increases
Answer:
no. the movement of water is from an area of low concentration to high concentration.
They are reproduced in prokaryotes