Question

15 multiple choice 2 points genetic engineering of food crops continues to be debated among scientists. is only used with corn. both a and c. must be disclosed on food ingredient labels. 16 multiple choice 2 points which of the following are minerals that contain valuable substances? longwalls gangue minerals native minerals ore minerals

Explanation:

For question 15, genetic engineering of food crops is a topic of ongoing scientific debate and there are regulations regarding its disclosure on food ingredient labels. It is not only used with corn. For question 16, ore minerals are minerals that contain valuable substances. Longwalls are related to mining methods, gangue minerals are worthless minerals associated with ore, and native minerals are elements in their pure - state, not necessarily containing valuable substances in the context of the question.

Answer:

1. A. continues to be debated among scientists; D. must be disclosed on food ingredient labels
2. D. ore minerals