AP BIOLOGY

Detailed explanation-1: -An aquatic ecosystem includes freshwater habitats like lakes, ponds, rivers, oceans and streams, wetlands, swamp, etc. and marine habitats include oceans, intertidal zone, reefs, seabed and so on.

Detailed explanation-2: -The two major divisions of freshwater ecosystems are the lentic ecosystems and the lotic ecosystems. Lentic ecosystems are those whose water is still, and are made up of ponds, marshes, ditches, lakes and swamps. These ecosystems range in size from very small ponds or pools that may be temporary, to large lakes.

Detailed explanation-3: -Freshwater ecosystems can be divided into three main categories: rivers and streams, lakes and ponds, and freshwater wetlands.

Detailed explanation-4: -The freshwater ecosystem is mainly divided into three types based on its region – Lotic, lentic, and wetland freshwater ecosystem.

Detailed explanation-5: -Fresh water is found in glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands and even groundwater. These freshwater habitats are less than 1% of the world’s total surface area yet house 10% of all known animals and up to 40% of all known fish species.