U3 KA8 Threats To Biodiversity

Question 1

What is the bottleneck effect and how does it impact genetic diversity?

Answer 1

The bottleneck effect occurs when small populations lose genetic variation, reducing their ability to evolve in response to environmental changes.

Question 2

What is habitat fragmentation?

Answer 2

Habitat fragmentation leads to habitat loss, which results in smaller habitat fragments.

Question 3

How can we help fix habitat fragmentation?

Answer 3

Habitat corridors can link isolated fragments to remedy fragmentation.

Question 4

What are the benefits of habitat corridor?

Answer 4

Habitat corridors offer more breeding opportunities and more hunting and feeding availability

Question 5

What are introduced Species?

Answer 5

Introduced species are non-native species moved by humans.

Question 6

What are naturalised species?

Answer 6

Naturalised species are those that become established in wild communities. After being an introduced species.

Question 7

What are invasive species?

Answer 7

Invasive species spread rapidly, outcompete native species.

Question 8

What are invasive species effect on the environment?

Answer 8

may reduce species diversity by preying on, competing with, or hybridizing with native species. They may also lack predators, parasites, or competitors in their new environment.

Question 9

What is the order of a species becoming invasive?

Answer 9

Introduced species -> Naturalised Species -> Invasive Species

Question 10

What is the impact of habitat fragmentation on species richness?

Answer 10

Degradation of these fragments’ edges increases competition between species and may reduce biodiversity.