Human impacts and how they are controlled

Overview

Habitat destruction, pollution, overexploitation and invasive species, and the legislation, protected areas, habitat restoration and captive breeding that respond.

What you need to know

Answer each one before you reveal it.

Questions from this subtopic

Each one with the model answer underneath.

1. 1

   Why does balancing conservation with human needs require compromise?

   Model answer

   Protecting ecosystems must be balanced against the need for sustainable resource extraction to support human livelihoods and economies.

2. 2

   How does habitat destruction negatively affect populations?

   Model answer

   Habitat destruction removes living space and resources, reducing population size and potentially causing local extinction.

3. 3

   In what way does pollution harm animal and plant populations?

   Model answer

   Pollution can poison organisms, disrupt reproduction, and degrade habitats, leading to population decline.

4. 4

   How does overexploitation affect populations?

   Model answer

   Overexploitation removes individuals faster than they can reproduce, causing population decline and potential extinction.

5. 5

   What impact can invasive species have on native populations?

   Model answer

   Invasive species can outcompete, prey upon, or introduce diseases to native species, reducing native population sizes.

6. 6

   How does legislation help control negative human impacts on populations?

   Model answer

   Legislation provides legal protection for species and habitats, regulating activities that could cause harm.

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