Threats to Biodiversity: Habitat Loss and Degradation

What is the result of habitat degradation?

Loss of species requiring large areas of habitat (correct)
Increase in populations
Increase in biodiversity
No impact on species

What is habitat fragmentation?

Increase in habitat size
Change in the quality of habitats
Change in the shape and configuration of remaining habitat after habitat loss (correct)
Loss of habitats

What is the effect of habitat fragmentation on populations?

Increase in population size
No impact on population size
Small populations prone to extinction (correct)
Increase in population diversity

What is a strategy to reduce the impact of habitat degradation?

Provide corridors to connect fragments (D) Signup and view all the answers

What is the result of overexploitation?

Resource exhaustion or extinction (D) Signup and view all the answers

What is the primary cause of terrestrial habitat loss?

Agriculture (C) Signup and view all the answers

What is the result of overgrazing in arid and semiarid lands?

Desertification (A) Signup and view all the answers

What is the process of clearing land of trees?

Deforestation (C) Signup and view all the answers

What is a strategy to reduce the impact of agriculture on biodiversity?

Increase productivity of existing agricultural land (C) Signup and view all the answers

What is an example of habitat loss in water systems?

Dredging (D) Signup and view all the answers

What percentage of birds are threatened due to invasive alien species?

30% (D) Signup and view all the answers

What is a consequence of the introduction of invasive species?

Major economic consequences for humans (D) Signup and view all the answers

What is an effect of climate change on ecosystems?

Altered patterns of precipitation and more extreme weather events (D) Signup and view all the answers

What happens to native species when invasive species are introduced?

They are unable to successfully compete against the invasive species (A) Signup and view all the answers

What is an example of multiple drivers acting together?

Tropical deforestation (D) Signup and view all the answers

What is the primary driver of biodiversity loss, according to the human population's impact on the environment?

The way we consume resources (C) Signup and view all the answers

What is the percentage of arid and semiarid lands that are currently occupied by rangelands?

70% (C) Signup and view all the answers

What is the estimated proportion of habitable land used for agriculture?

50% (A) Signup and view all the answers

What is the strategy to reduce the impact of deforestation on biodiversity?

Reforestation (B) Signup and view all the answers

What is the proportion of available freshwater resources used for agriculture?

3/4 (C) Signup and view all the answers

What is a likely consequence of the introduction of an invasive species that leads to a decline in native species?

Native species become extinct due to lack of resources (A) Signup and view all the answers

What is a common outcome when multiple drivers act together in an ecosystem?

The ecosystem is more susceptible to threats (B) Signup and view all the answers

What is a consequence of climate change on plant populations?

Changes in distribution patterns (B) Signup and view all the answers

What is a common impact of deforestation on ecosystems?

Loss of native species (C) Signup and view all the answers

What is a consequence of the introduction of disease to an ecosystem?

Changes in ecosystem structure (A) Signup and view all the answers

What is the primary driver of habitat degradation and loss?

Agricultural activities (D) Signup and view all the answers

What is the consequence of habitat fragmentation on species populations?

Loss of species requiring large areas of habitat (C) Signup and view all the answers