Dalton's contribution was different from thatof the ancient Greeks who populated the existence of atoms. Point out the difference between the two ideas.

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Explanation:

The Greeks held the belief that atoms where spherical. However, they thought that atoms of elements where different for the different states of mater. Dalton brought about the idea that the atoms of the same element are exactly alike irrespective of the physical state of the system.

Dalton introduced the idea that chemical reactions result from rearrangement of atoms in molecules. This idea was not captured by the early Greeks.

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one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.