Biology, 30.09.2019 07:30, justinjoyner12p5ox1r

Which of the following was probably the least important factor in bringing about the cambrian explosion?

a. the emergence of predator-prey relationships
b. an increase in the concentration of atmospheric oxygen
c. the movement of animals onto land
d. the origin of hox genes

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Which of the following was probably the least important factor in bringing about the cambrian explos...