Farmers use fertilizers to improve crop growth which can impact the environment though agricultural runoff. What is agricultural runoff?

Part A
Farmers use fertilizers to improve crop growth which can impact the environment though agricultural runoff. What is agricultural runoff? Provide two examples of how farmers can prevent it. (100 words with references)

Part B
Superweeds are plants having a high resistance to different herbicides. How do superweeds grow? Do GMOs influence the growth of superweeds? Why or why not? (100 words with references)

Part C
Please complete the attachment and use relevant articles that I have attached.

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