Question

choose two reasonable solutions to slow or deter drug resistance among insects and bacteria.

• ☐ stopping treatment early once symptoms improve.

this allows the most resistant bacteria or insects to survive and reproduce, increasing resistance.

• ☐ use pesticides or antibiotics only when necessary and as directed.

limiting use reduces selective pressure, meaning fewer resistant insects or bacteria survive and reproduce.

• ☐ rotate or combine different treatments.

using multiple pesticides or antibiotics with different modes of action makes it harder for insects or bacteria to evolve resistance to any one treatment.

• ☐ using the same pesticide or antibiotic repeatedly over long periods.

this strongly selects for resistant populations and speeds up the evolution of resistance.
possible points: 33.33

Explanation:

To solve this, we analyze each option to see if it slows/deters resistance (good) or increases it (bad):

1. Option 1: "Stopping treatment early... increases resistance" → This increases resistance (not a solution). Eliminate.
2. Option 2: "Use pesticides/antibiotics only when necessary..." → Limiting use reduces selective pressure (fewer resistant organisms survive), so this slows resistance. Valid.
3. Option 3: "Rotate or combine different treatments..." → Using multiple/different treatments makes it hard for organisms to evolve resistance (they can’t adapt to all), so this slows resistance. Valid.
4. Option 4: "Using the same pesticide... speeds up resistance" → This increases resistance (not a solution). Eliminate.

Answer:

B. Use pesticides or antibiotics only when necessary and as directed.
C. Rotate or combine different treatments.