pigs that are modified to have more fat cows that are modified to require less feed corn that is modified to be resistant to herbicides soybeans that are modified to make their own insecticide
I gave my students this multiple choice question: Nutrient runoff can cause algal blooms in waterways. Which genetically modified organisms could help reduce algal blooms?

Only one answer is correct among these 4 choices:
- pigs that are modified to have more fat
- cows that are modified to require less feed
- corn that is modified to be resistant to herbicides
- soybeans that are modified to make their own insecticide

Could you tell me which one is correct?

cows that are modified to require less feed