Biodiversity 8.12C

Does this picture show biodiversity?

• Yes
• No

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What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

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 Which biome is more likely to survive a change in the environment?

• High (rich) biodiversity
• Low (poor) biodiversity

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When an ecosystem is more diverse it has more sustainability.

• False
• True

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What is sustainability?

• the ability to be maintained at a certain rate or level.
• a bunch of animals
• a loss
• a win

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If biodiversity is high then sustainability is ____?

• High
• Low

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If biodiversity is low then sustainability is ____?

• High
• Low

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An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off.

Increased biodiversity results in a more sustainable ecosystem because -

• F. A greater number of plant species means that there is less barren land

• G. A greater variety of species present allows more organisms to adapt after changes occur

• H. The transition area between two ecosystems is narrower.

• J. There are fewer species to be affected by environmental stresses

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Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.

Based on these observations, which ecosystem is likely to be the LEAST sustainable?

• A. Ecosystem 1, because it has the fewest species.

• B. Ecosystem 2, because it includes both aquatic and terrestrial species.

• C. Ecosystem 3, because it has few predators.

• D. Ecosystem 4, because it supports many animals.

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Tropical rainforests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?

• F. The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.

• G. Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.

• H. The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.

• J. All of the above.

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