Wildlife is continuously decreasing. What is the main reason of this?

Which is the most endangered species?

The most important human activity, leading to the extinction of wildlife is:

If we uncover half of the forest, covering the earth, what crisis will be produced at most and at first?

Which group of vertebrates comprises the largest number of endangered species?

In a large grassland ecosystem, the largest population is that of

In a population, the following occurs if the number of birth equals the number of deaths

Which of the following is a type of predator

A community and its physical environment together is a(n)

A gradual change in an ecosystem which could occur over hundreds of years is

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