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8 Cards in this Set

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  • Back
How many species have been described?
1.75 million (1/4 of all species)
How many species remain to be described?
3/4 of all species
What animals account for the greatest amount of species diversity?
insects
How do we estimate biodiverstiy?
variety and variability of life on earth, measured by species
What are ecosystem services?
atmosphere and climate, freshwater, nutrient cycling, pollination, pest population, disease
What is an ecological footprint?
Amount of land, water, and food to support a person
how many additional planet earths would be required if all humans had the ecological footprint of an American?
4
Why is biodiversity important? Why study it?
Values of species. Human life is sustained