SS2 Second Term Biology Lesson Note – Pollution

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WEEK 5

TOPIC: POLLUTION

CLASS: SS2                                                                                  

CONTENT:

1. Air Pollution
2. Noise pollution
3. Water pollution,

Pollution can be defined in the contamination of the environment due to main activities which releases. Harmful substances into our surrounding in quantities that is dangerous to man and his resources.

Types of pollution

Types of pollution include the following:

1. Air pollution,
2. Noise pollution
3. Water pollution,
4. Soil pollution,

Substances that pollute the environment are called pollutants thus: there are Air, water, soil and noise pollutants.

Czech Air Pollution

Factory smoke darkens the sky above Prague, Czech Republic. The Czech Republic faces a severe air pollution problem that is choking the nation’s land. Air pollution and subsequent acid rain has killed or damaged many of the country’s trees and badly degraded its soil.

 SUB-TOPIC I. Air Pollution:

From man’s daily activities pollutants such as smoke, gasses and solids are disposes into the atmosphere. Air pollution can also be said to be presence of mixture of gases and solid patches in the air.

Nature of Air Pollution

Pollutants of the atmosphere (Air) include; gases, smoke, oxides of carbon, sulphur and nitrogen such as; carbon (iv) oxide, carbon (ii) oxide, sulphur (iv) oxide and oxides of nitrogen respectively as well as smoke, dust etc. Manufacturing industries, fumes from city Motor vehicles, power stations, combustion of fuels of automobiles and jet planes also release pollutants into the atmosphere. Herbicides, pesticides, aerosol, dust particles, pollen grains fluorides and smog are all pollutants of the atmosphere.

Sources of air pollutants

Fumes, dust, wastes from Construction sites, industries, mines, power station, farmlands, domestic fires, sprayed herbicides and pesticides are sources of air pollutants.

Industrial Smokestacks

Carbon dioxide, sulfur dioxide, and other types of contaminants pouring from industrial smokestacks contribute largely to the world’s atmospheric pollution. Carbon dioxide contributes significantly to global warming, while sulfur dioxide emissions are the principal cause of acid rain in the northeastern United States, southeastern Canada, and eastern Europe.

Effects of air pollution

Pollution of the atmosphere which is Air pollution affects man and his resources in various ways:

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