Ecologists warn that human population growth, economic development, and poverty are exerting increasing pressure on the earth's ecosystems and on the it provides.

The answer is "Ecosystem services".

We can simply divide the Ecosystem services into four primary divisions which are:

1)    Provisioning, for example, the generation of nourishment and water.

2)    Controlling, for example, the control of atmosphere and illness.

3)    Supporting, for example, supplement cycles and crop fertilization.

4)    Cultural, for example, spiritual and recreational advantages.

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