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What must be used with special caution near bee hives, since bees may carry them back to the hive and poison the entire colony?

  1. 1. Contact insecticides

  2. 2. Fumigants

  3. 3. Microencapsulated herbicide

  4. 4. Systemic insecticides

The correct answer is: 1. Contact insecticides

Possible explanation One must use contact insecticides with special caution near bee hives because bees can easily come into contact with these chemicals and carry them back to the hive, potentially poisoning and killing the entire colony. This is not the case with the other options. Fumigants are typically used to control pests in enclosed spaces and do not typically attract bees. Microencapsulated herbicides are designed to be absorbed through plant leaves, so it is unlikely that bees would come into contact with them. Systemic insecticides are typically absorbed through plant roots or stems, so bees are less likely to be affected.