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Flashcards in Issues relating to biodiversity Deck (34)
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31

What percentage of species that have EVER existed on earth have become extinct? 25%, 50% or 99%?

99%

32

What is a biodiversity hotspot?

An area with strong biodiversity that the species are vulnerable to extinction

33

What are the most threatened ecosystems and why?

Fresh water because of pollution and over fishing

34

What is the biggest threat to bees?

Pesticide use