Biodiversity

The greater a habitat’s biodiversity, the greater will be that habitat’s -

• sustainability over time with varying conditions.

• consumption of energy in the form of sunlight.

• temperature ranges across the seasons.

• distance to the nearest water source

Why does biodiversity contribute to a habitat’s sustainability?

• The more plants and animals in a habitat, the greater the biomass, which is how habitats store energy.

• The greater the number of species, the more competition there is for food between predators, which sustains their populations

• Changing conditions that harm one species leave other species to survive and perhaps even thrive.

• Landforms change shape less frequently when there is a greater number of species using the land.

Which of the following most likely supports the most sustainable ecosystem?

• The habitat with the greater number of green plants

• The habitat with the greatest variety of living things

• The habitat with the warmest average temperature

• The habitat with the greatest number of consumers

An ecosystem with high biodiversity has more types of organisms than an ecosystem with low biodiversity. How would an ecosystem with high biodiversity be able to recover if one food source becomes unavailable?

• Organisms relying on the lost food source can move to a less diverse ecosystem.

• Organisms relying on the lost food source can eat a different food source.

• Organisms relying on the lost food source can increase in population size

• Organisms relying on the lost food source can grow their own food source.

Which food web has the greater chance of sustainability?

• Food web B because here are not so many organisms to compete with another for resources.

• Food web B because extinction of a single species will have a lesser impact on the ecosystem.

• Food Web A because extinction of a single species will have a lesser impact on the ecosystem.

• Food web A because extinction of a single species will have no impact on the ecosystem.

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?

• Ecosystem 1 because it has the fewest species

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

• Ecosystem 3, because it has few predators

• Ecosystem 4, because it supports many animals

Biodiversity usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

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

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

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When there is higher biodiversity

• more organisms are likely to die because they can't adapt to environmental changes.
• there is less diversity.
• there is more diversity and higher sustainability of life.
• there is more diversity and lower sustainability of life

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How do biodiversity and sustainability work together?

• The lower the biodiversity the greater the sustainability.
• The higher the biodiversity, the less sustainable the ecosystem
• The higher the biodiversity, the greater the sustainability.
• Biodiversity has nothing to do with sustainability.

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