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WorksheetsEcosystem and Biodiversity
Total questions: 11
Worksheet time: 6mins
the variety of life in the world or in a particular habitat or ecosystem
biodiversity
demography
carrying capacity
poaching
a species that is not native to a particular region
endemic
exotic
endangered
extinct
species that are native to and found only within a limited area
endemic
exotic
endangered
extinct
a species at risk, but not yet endangered
endangered
exotic
endemic
threatened
How many species are estimated to be living on Earth?
between 10,000 and 100,000
between 1 and 2 million
between 500,000 and 1 million
between 10 and 50 million
Which of the following would be most effective in slowing the loss of biodiversity?
creating large parks/preserves in biodiversity hotspots
requiring every country to maintain a seed bank
In what part of the world are the greatest number of extinctions occurring?
in deserts
in the Arctic
in tropical rain forests
The level of biodiversity that involves a variety of habits and communities is _____ diversity.
ecosystem
population
genetic
species
The ecosystem approach to conservation is partly based on the idea that:
a healthy biosphere requires intact ecosystems.
human needs are of secondary importance.
Why is biodiversity important to ecosystems?
It helps populations adapt to ecological changes.
It increases at each level of the food chain.
