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selective destruction - wildlifethe selective destruction of one species of an existing fauna can produce equally unfortunate results the perfect
hunting and export - wildlifethe hunting and export of excessive numbers of certain animal species is another important factor leading to dangerous
wildlife - ecologythe term wildlife probably originated in 1913 in a book our vanishing wildlife by william hornaday director of the new york
causes of degradation of ecosystem due to agriculturedegradation of the ecosystem due to agriculture can be on the following accountsa removal of
agriculture - degradation of ecosystemagriculture whether traditional or modern involves intervention and modification of the natural ecological
overgrazing - degradation of ecosystemit refers to the condition when the grazing pressure on the vegetation is so intense that it does not recover
other causes - deforestationnatural enemies like termites pests and several kinds of diseases affect the forests adversely there is also massive
fuel requirements - deforestationthe increasing demand for fuel wood is one of the major factors leading to the degradation of the forest ecosystem
development projects - deforestationthe use of science and technology to support the ever- increasing needs of man is termed as development in the
shifting cultivation - degradation of ecosystemthis method of cultivation is practised all over the globe but is more prevalent in the tropical
deforestation - degradation of ecosystemthe deforestation is a broad term it means the removaldestruction of the forest cover or the vegetation of an
important causes of degradation of ecosystemthe important causes that have lead to the degradation of the ecosystem deforestation overgrazing
degradation of ecosystem ancient man was simple-minded food gatherer and hunter he looked upon nature with awe and respect and in fact he worshipped
ecosystem degradation and wildlifeman is an animal with ecological requirements just like any other animal it constantly needs a source of energy
types of overpopulation - consumption overpopulationconsumption overpopulation is a phenomenon seen in technologically advanced and affluent
types of overpopulation - people overpopulationpeople overpopulation refers to a situation where there are more people than the supplies of food
four distinct phases of demographic transitiondemographic transition takes place in four distinct phases1 re-industrial stage in which harsh living
demographic transitionas we saw earlier death rates and birth rates have been nearly equal throughout much of human history however in western europe
total fertility ratetotal fertility rate tfr is the total number of children a women can be expected to bear in a given population if birth rates are
age-sex distribution while studying exponential growth we need to know more than just the birth and death rates because these rates vary with age and
archaeological records of human campsitesarchaeological records of human campsites indicate that early humans started out as small bands of hunters
evolutionary implications of natural regulationmany changes in abundance can be attributed to changes in extrinsic factors such as weather disease or
genetic diversity of populationthe biological diversity of animals plants and microorganisms is of fundamental importance to human survival the term
density independent factors density independent factors are the extrinsic factors which tend to regulate the density of a population in ways that are
density dependent factors - population regulationthe density dependent factors are intrinsic or biotic factors and they depend on interactions