Which one of the following statements is not valid for aerosols?
- AThey are harmful to human health
- BThey alter rainfall and monsoon patterns
- CThey cause increased agricultural productivity
- DThey have negative impact on agricultural land
Solution & Step-by-step Explanation
Aerosols are fine solid particles or liquid droplets in air. They have several negative impacts: they cause respiratory issues, interfere with solar radiation, and can alter weather patterns. They do not increase agricultural productivity; in fact, they can reduce it by blocking sunlight (global dimming) and damaging crops through acid rain.