Biodiversity

A species that enters an ecosystem that is not native to that region is known as a/an: 

• Threatened Species

• Endangered Species

• Endemic Species

• Invasive Species

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The deforestation of rainforests in South America is example of what specific type of threat to biodiversity?

(Deforestation means removing trees.)

• invasive species

• pollution

• habitat destruction

• climate change

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Which organisms help increase the biodiversity of an ecosystem and conserve and recycle resources?

• Producers

• Parasites

• Predators

• Decomposers

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Which food web has the greater biodiversity?

• Food Web X

• Food Web Y

• They have equal biodiversity

• There is not enough information to determine biodiversity

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Scientists observe two different habitats in North America. In the event of a natural disaster, which habitat most likely survives and has the ability to rebuild?

• Habitat 2 survives and rebuilds because there are less species that escape the natural disaster

• Habitat 1 survives and rebuilds because there is less biodiversity

• Habitat 1 survives and rebuilds because there is more biodiversity

• Habitat 2 survives and rebuilds because there is less biodiversity

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The impact of vanishing species will be highest if there is a significant loss of -

• manmade resources

• biodiversity

• ecological problems

• conservation

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Which activity negatively impacts biodiversity and the sustainability of an ecosystem?

• Boosting an ecosystem's productivity

• Ensuring natural sustainability of all living organisms

• Assisting ecosystems in recovering from disasters

• Human interference causing extinction of organisms

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Biodiversity results in a healthy ecosystem. How can humans make a positive impact on sustaining an ecosystem's biodiversity?

• Ensure appropriate conservation of natural resources

• Increase industrial fishing

• Exploit land and its resources

• Reserve more land for waste containment

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Which ecosystem is least able to sustain its organisms during a period of environmental stress?

• Desert

• Grassland

• Rain Forest

• Arctic

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Scientists have concluded ecosystems with a high level of biodiversity are more stable than ecosystems with a low level of biodiversity. Why have scientists made this conclusion?

• A high level of biodiversity has many more animals, so there is a greater chance some survive environmental stressors

• A high level of biodiversity has a large variety of species, so the ecosystem can better survive environmental stressors

• A ecosystem with a high level of biodiversity only has the strongest organisms, so they will survive environmental stressors

• An ecosystem with a high level of biodiversity is in an area in which environmental stressors are rare.

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