Question

question 1 - 13
which pollutant would probably not directly harm most plants, despite having a negative impact on human populations and the environment?
carbon dioxide from automobile exhaust
salt pollution from fertilizers and erosion
acid rain from smoke stack emissions
motor oil from automobile runoff

Explanation:

Plants use carbon - dioxide for photosynthesis. While high levels of CO₂ can have indirect negative impacts on the environment and climate, it does not directly harm most plants in the same way as the other pollutants. Salt pollution can cause osmotic stress to plants, acid rain can damage leaves and soil, and motor oil can contaminate soil and prevent root oxygen uptake.

Answer:

carbon dioxide from automobile exhaust