1. explain the linnaean system of classification. what has caused changes to this system since the early 1700s?

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Linnaeus divided nature into three kingdoms: animals, vegetable (or plant),  and minerals. The animal and plant kingdoms were further divided into  smaller, more inclusive categories based on physical characteristics.  As time passed, and knowledge increased, other scientists added to  Linnaeus’ original system.

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The first means of speeding up reactions mentioned by the speaker is raising the enzymes 

Ithink the answer is b
not sure