EVERYDAY SCIENCE

Detailed explanation-1: -Answer and Explanation: All water bodies, including rives, lakes, oceans, and dams, are affected by runoff.

Detailed explanation-2: -Human effects on aquatic ecosystems can result from pollution, changes to the landscape or hydrological systems, and larger-scale impacts such as global climate change. The complexity of aquatic ecosystems and the linkages within them can make the effect of disturbances on them difficult to predict.

Detailed explanation-3: -Examples of aquatic ecosystem include oceans, lakes and rivers. 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-4: -61) Eutrophication is often caused by excess limiting-nutrient runoff from agricultural fields into aquatic ecosystems. This process results in massive algal blooms that eventually die and decompose, ultimately depleting the dissolved oxygen, killing large numbers of fish and other aquatic organisms.

Detailed explanation-5: -Marine coastal ecosystem. Marine surface ecosystem. Lentic ecosystem (lakes) Lotic ecosystem (rivers) Wetlands.