quiz 1 - 1a What is the subtitle of the ecology movie Race...

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1a. What is the subtitle of the ecology movie “Race to save the planet”?
1b. How many species become extinct by humans?
2a. How many species exist roughly on the planet?
2b. What fraction of species on the planet been threaten by humans?
3a. what percentage of the world’s animal tissue is comprised of ants?
3b. Give one important use of ants?

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