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1. Multicellular Organisms have different types of cells that make them up while Unicellular Organisms only have one type of cell in their body.

1.conversion of physical or chemical stimuli into electrical signals.
Processing, delaying and transferring of these signals through the body and nervous system itself.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

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