Question 49 2 pts According to lecture, approximately how many described species of insects are known? 250,000 500,000 1 million 20 million
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The number of known and described species that are in the range of, (approximately) (a) $1.3$ to $1.4$ million (b) $1.4$ to $1.5$ million (c) $1.7$ to $1.8$ million (d) $1.9$ to $2.2$ million
Assertion: According to the IUCN (2004), the total number of plant and animal species described so far is lightly more than $1.5$ million. Reason: For many taxonomic groups, species inventories are more complete in temperate than in tropical areas.
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