Answer:
An area or ridge of land that separates waters flowing to different rivers, basins, or seas.
Explanation:
That is a chemical change.. Hope I helped!
Convection this is because convection is bull movement of molecules between fluids
Answer:
The hotter the substance, the more its molecules vibrate, and therefore the higher thermal energy
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Mold fossils (a fossilized impression made in the substrate - a negative image of the organism)cast fossils (formed when a mold is filled in)trace fossils = ichnofossils (fossilized nests, gastroliths, burrows, footprints, etc.)