Many chemicals are used to kill insects and protect plants. how could the removal of insects upset the balance of the ecosystem? a) the plants would rapidly increase in number. b) animals that eat the insects would die as well. c) the animals in the ecosystem would eat all the plants. d) insects from other regions would replace the killed insects.

It would be B) because since the insects aren’t their the animals that use to eat them will not be able to eat anything and die.

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.