Which of the Following Was Probably the Least Important Factor

question 12

Multiple Choice

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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Definitions:

Compounded Semi-annually

A method where interest is calculated and added to the principal amount twice a year.

Quarterly

Happening quarterly or four times annually.

Trust Fund

A legal arrangement through which assets are held by a third party for the benefit of another party or parties.

Compounded Quarterly

The process in which interest is calculated and added to the principal amount every quarter of the year.