Which of these is a secondary crop?

A. Sugar
B. Latex
C. Wheat
D. Plums

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere