Author: Study Clue

A city shifts buses to CNG, yet PM2.5 remains high; the most likely missing control is A More horn restrictions

A city shows high PM2.5 even after light rain; the most likely reason is A Sunlight fully absent B Oxygen

When AQI shows “Very Poor,” the safest immediate step for sensitive people is A Burn waste quickly B Open garbage

A long-term increase in average temperature can directly increase A Earthquake frequency B Ocean tides daily C Heatwave frequency D

In AQI reporting, “sensitive groups” usually include people with A Perfect fitness level B Strong hearing power C Asthma or