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The term "population" indicates
the number of people living
in a defined area or territory.
Demography, from the Greek
word demos meaning people, is
a specialised study dealing with
population in terms of births,
deaths, diseases etc. Population
is a fundamental unit in ecology.
A population is a group of living
Deforestation is a result of increasing hunan
individuals set in a frame that is
population
limited and defined in respect of both
time and space.
(cutting of forest, overgrazing of
savannah land, etc) human competition
IMPACT OF POPULATION
(where native people kill animals
GROWTH ON ECOSYSTEM
for food). and high rates of trapping
Natural populations often exhibit a animals for commercial trades.
dynamic tendency of rising and falling The population trends of many
in response to many factors.
animals, are downward./Since 1600
In general, due to increasing human A.D., 120 species of birds and mammals
population the primate population is have become extinct, a number several
declining due to habitat deterioration times greater than the natural rate of
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photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
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