Define the following terms:

(a) Pollution

(b) Waste

(c) Air pollution

(d) Oil spills

(e) Pesticides

(f) Sanitary landfills

(g) Noise

(a) Pollution — Pollution is the addition of any such constituent to air, water or land which deteriorates the natural quality of the environment.

(b) Waste — Waste is any unwanted or undesired material or substance resulting from industrial, commercial mining, and agricultural operations, and from community activities.

(c) Air pollution — Air pollution means degradation of the air quality which harmfully affects the living organisms as well as certain objects.

(d) Oil spills — Oil spills are accidental discharges of petroleum in oceans or estuaries.

(e) Pesticides — Pesticides are substances used to kill, repel, or control certain forms of plant or animal life that are considered to be pests.

(f) Sanitary landfills — Sanitary landfills are the places where the wastes are dumped in a ground depression and covered with dirt every day.

(g) Noise — Noise is defined as any unpleasant/loud undesired sound interfering with one's hearing and concentration.