pesticides and fertilizers developed artificially for agricultural use

small, often microscopic, aquatic plants in a water body

artificial cultivation or growth of fish, crayfish and other organisms for use as food, particularly in fishpondsand similar structures

the combination of physical, chemical, and biological conditions present in lakes, reservoirs, wetlands, rivers and oceans

one of the five kingdoms of living beings. Bacteria are structurally simple single cells with no nucleus.

a water catchment area, including rivers, streams, lakes, estuaries, etc.

life, of living beings, biological

a substance, such as an enzyme or hormone that activates or speeds up a biochemical reaction

a community of biologically integrated and interdependent plants and animals

the branch of chemistry that deals with plant and animals and their life processes