CW/HW: 10.2 and 10.3 Invasive Species and Deforestation

Why has Earth's human carrying capacity increased greatly?

• Other organisms have been displaced by agriculture, so there is more space for humans.

• Humans have modified their environment due to technological advances.

• Humans can live closer together than other animals

• Humans are now eating fewer plants than they used to.

Increased industrialization will most likely

• decrease available habitats 
• increase environmental carrying capacity 
• increase the stability of ecosystems 
• decrease global warming

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Many different types of organisms. 

• Pioneer species
• Community
• Biodiversity
• Population

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As species go extinct what will happen to the biodiversity in that ecosystem?

• Decrease

• Increase

• Stay the same

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What is an invasive species?

• non-native, foreign species to a new ecosystem introduced by humans

• native species to a new ecosystem observed by humans

Select two negative consequences of invasive species in an ecosystem.

• reduce resources

• increase resources

• disrupt food webs

• increase biodiversity

Why might an introduced animal species overrun native species in an ecosystem?

• Its population size is smaller than those of 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

At the airport, customs will check if you are bringing back non-native fruits because

• the fruits can carry pathogens that can be an invasive species

• the fruits can carry probiotics (helpful bacteria)

• the fruits will always be an invasive species themselves

Which statement describes a situation that would reduce the stability of a forest ecosystem?

• A fierce predator is removed from the ecosystem.
•  The number of producers remains constant in the ecosystem.
•  Organisms frequently interact within the ecosystem
•  The energy in the ecosystem flows from the Sun.

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What is deforestation?

• removal of trees in an area

• planting of trees in an area

• cutting down only one tree

• sitting under a tree and reading a good book