Global Warming

Global warming is called the greenhouse effect because the gases that are gathering above the earth make the planet comparable to a greenhouse.  By trapping heat near the surface of the earth, the greenhouse effect is warming the planet and threatening the environment.

Geography

Concept of Environmental Geography

In history man has always been interested about the place where he lives. To enable him to survive he observed the nature of his surroundings and the changes taking place therein. Then he observed the natural phenomena of day and night, the changes of seasons, and the effects of rain, sunshine, or snow on the lives of plants and animals on the earth's surface. And to cultivate the soil to produce the kind of crops needed and to use water for irrigation and domestic purposes.

Geography 

Geography is derived from the Greek word "geographia" which may be translated literally as "description of the earth". One aspect is known as physical geography which consists of the systematic study of the earth such as landforms, climate, oceans, and other natural resources. The field of the geographers is limited to a thin shell of the earth's surface extending about 45 kilometers into the atmosphere and about four kilometers toward the earth's interior. Only within this zone, some 49 kilometers in thickness are found the conditions that make ordinary life possible. This referred to as the human habitat.

Environment

A variety of environmental problems now affect our entire world.  As globalization continues and the earth's natural processes transform local problems into international issues, few societies are being left untouched by major environmental problems.

Environmental Problems

The problems of the environment can be grouped under five categories:

(a) Population explosion is the rapid increase of population which started in 1650. This was brought about by advanced knowledge in medical science and technology which resulted in the increased longevity of man's existence and reduction in the death rate.

(b) Pollution is the contamination of air, water, and land with the introduction of impurities which are harmful to man and other desirable organisms. Smoke pollutes the air; improper disposal of sewage and liquid wastes pollutes the water; and junk cars and improper disposal of garbage pollute the land.

(c) The Depletion of Natural Resources will increase with the increase of population and the establishment of more factories. The natural resources particularly the metals and mineral fuels such as coal, oil and gas are exhaustible.

(d) Agricultural production cannot increase indefinitely. According to Malthus, population grows by geometric progression while food supply increases only by arithmetic progression.

(e) Industrialization is the process of change from an agrarian and handicraft economy to one dominated by industry and machine manufacture. This involves the mechanization of labor and dependence on inanimate sources of energy and the use of raw materials for the production of more goods and services.