Biodiversity Human Impact

The largest threat to biodiversity is

• bacteria

• humans

• fungi

• plants

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The loss of a natural habitat is called _______.

• moving

• wild fire

• pollution

• habitat destruction

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Which of the following pose a threat to biodiversity? Choose all that apply.

• invasive species

• habitat destruction

• population growth

• pollution

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What makes a species "invasive"?

• species that cannot adapt

• making another species leave so that it can move in

• moving to a new ecosystem where it does not naturally belong and taking resources from natives

• taking up too much space

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Extreme weather conditions, such as floods, forest fires, & hurricanes, are called _______.

• climate change

• precipitation

• weather

• natural disasters

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What is the main way that invasive species get introduced to a new area?

• too much food

• human actions

• weather events

• moving there

Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This overfishing could cause ...

• ecosystems to be improved for future generations

• ecosystems to be severely damaged

• the restoration of environmental stability

• all other fish species to increase in number

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Why might an invasive species overrun a native species in an ecosystem?

• Its population size is smaller than the native species

• It is more energy efficient, so it eats less food

• It is a predator of the native species

• It often has no natural enemies in that ecosystem

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What is a GMO?

• An organism that has had its DNA modified by humans

• An organism missing a chromosome

• Epigenetics

• A genetically identical organism

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An argument in favor of food biotechnology is that it

• provides foods that cure viral diseases.

• provides more food to feed a growing population.

• provides a cash crop for low income nations.

• biotech foods are not controversial

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