What are three reasons to reduce pesticide use?

  Pesticides are stored in your colon, where they slowly but surely poison the body. After countless studies, pesticides have been linked to cancer, Alzheimer's Disease, ADHD, and even birth defects. Pesticides also have the potential to harm the nervous system, the reproductive system, and the endocrine system.  

Explanation:

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answer; polycythemia is the correct answer;