Hunters are poaching elephants in forests to obtain ivory.

this activity is an example

blank 1:

a. exploitation of resources

b. habitat loss

c. increased biodiversity

a decrease in the number of elephants in forests led to the loss of primary consumers.

this loss may lower the ecosystem.

blank 2:

a. biodiversity

b. carrying capacity

c. space

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.