According to the theory of plate tectonics, which major force moves plates? a. convection currents in the mantle b. gravity from the sun c. tides caused by the moon d. gravity from the earth e. continental buoyancy

A. convection currents in the mantle.is the correct answer

Bis the

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.