Population Growth And The Environment Essay

Population Growth And The Environment Essay-77
No simple relationship exists between population size and environmental change.However, as global population continues to grow, limits on such global resources as arable land, potable water, forests, and fisheries have come into sharper focus.

No simple relationship exists between population size and environmental change.However, as global population continues to grow, limits on such global resources as arable land, potable water, forests, and fisheries have come into sharper focus.

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In Hunter concludes that population dynamics have important environmental implications but that the sheer size of population represents only one important variable in this complex relationship.

Other demographic dynamics, including changes in population flows and densities, can also pose challenging environmental problems.

According to recent United Nations estimates, global population is increasing by approximately 80 million — the size of Germany — each year.

Although fertility rates have declined in most areas of the world, population growth continues to be fueled by high levels of fertility, particularly in Asia and Africa.

Between 19, Earth's population doubled from three billion to six billion people.

In many ways, this reflected good news for humanity: child mortality rates plummeted, life expectancy increased, and people were on average healthier and better nourished than at any time in history.

The distribution of people around the globe has three main implications for the environment.

First, as less-developed regions cope with a growing share of population, pressures intensify on already dwindling resources within these areas.

Likewise, continued population growth occurs in the context of an accelerating demand for water: Global water consumption rose sixfold between 19, more than double the rate of population growth.

The ways in which populations are distributed across the globe also affect the environment.

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