They are both plants, also reproduction, and pollen, i think
Your answer would be <em><u>D. refrigerator coils keeping the refrigerator cold</u></em>
1. Reduced production of waste materials
2. Increased reuse of older materials
3. Use more renewable sources of energy
4. Decrease the rate of fires through alternate means of warmth
5. Burn down less forests and find better means of farming