Concern for environment has increased and spread over recent years.
Please address correspondence to Dr.
From Population and Environment: Life on Earth is driven by energy. Autotrophs take it from solar radiation and heterotrophs take it from autotrophs. The control of fire and the exploitation of fossil fuels have made it possible for Homo sapiens to release, in a short time, vast amounts of energy that accumulated long before the species appeared.
By using extrasomatic energy to modify more and more of its environment to suit human needs, the human population effectively expanded its resource base so that for long periods it has exceeded contemporary requirements. This allowed an expansion of population similar to that of species introduced into extremely, propitious new habitats, such as rabbits in Australia or Japanese beetles in the United States.
But the exhaustion of fossil fuels, which supply three quarters of this energy, is not far off, and no other energy source is abundant and cheap enough to take their place. If there are survivors, they will not be able to carry on the cultural traditions of civilization, which require abundant, cheap energy.
It is unlikely, however, that the species itself can long persist without the energy whose exploitation is so much a part of its modus vivendi. The human species may be seen as having evolved in the service of entropy, and it cannot be expected to outlast the dense accumulations of energy that have helped define its niche.
Ever since Malthus, at least, it has been clear that means of subsistence do not grow as fast as population. But in the same two centuries world population has grown exponentially while irreplaceable resources were used up.
Some kind of adjustment is inevitable.
Today, many people who are concerned about overpopulation and environmental degradation believe that human actions can avert catastrophe. Unfortunately, worldwide implementation of a rigorous program of birth control is politically impossible.
Conservation is futile as long as population continues to rise. And no resources are truly renewable.
If all of nature were in perfect balance, every species would have a constant population, sustained indefinitely at carrying capacity. But the history of life involves competition among species, with new species evolving and old ones dying out.
In this context, one would expect populations to fluctuate, and for species that have been studied, they generally do ecology texts such as Odum, and Ricklefs, give examples.
The notion of balance in nature is an integral part of traditional western cosmology. But science has found no such balance. According to the Second Law of Thermodynamics, energy flows from areas of greater concentration to areas of lesser concentration, and local processes run down. Living organisms may accumulate energy temporarily but in the fullness of time entropy prevails.Negative Population Growth Negative Population Growth, Inc.
A comprehensive, coeducational Catholic High school Diocese of Wollongong - Albion Park Act Justly, love tenderly and walk humbly with your God Micah Essay bombeck problem solving essay examples. Gain understanding particular type of essay intend to an essay hindi about write essays. Mar 15, · Essay on Population Explosion Growth in India Earth has formed billion years ago and the beginning of the existence of life in the form of microorganisms is /5(4).
(NPG) is a national nonprofit membership organization with over 30, members. It was founded in to educate the American public and political leaders regarding the devastating effects of overpopulation on our environment, resources, and standard of living.
Economic growth is the increase in the inflation-adjusted market value of the goods and services produced by an economy over time. It is conventionally measured as the percent rate of increase in real gross domestic product, or real GDP..
Growth is usually calculated in real terms - i.e., inflation-adjusted terms – to eliminate the distorting effect of inflation . ADVERTISEMENTS: Population Growth: Essay on Population Growth!
From sociological point of view – population simply means number of people, living at a particular area (country/region) at a particular time.
The current human population growth is something unprecedented in the history of the world. Essay bombeck problem solving essay examples.
Gain understanding particular type of essay intend to an essay hindi about write essays. acquired trait: A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation (for example, the large.
Pollution. The word pollution has been derived from the Latin word pollution, which means to make dirty. Pollution is the process of making the environment land water and air dirty by adding harmful substances to it.