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There’s smoke and ash outside. You feel like you’re inhaling tiny dust particles. You check your weather app for the air quality. But what do the numbers and colors mean? The Air Quality Index is a ...

Knowledge of converting numbers into and from standard form will be useful before looking at calculations with standard index form. Back to top How to add and subtract numbers in standard form, with ...

If you live in regions like North India or cities like Delhi, what dominates concerns for every individual and family November onwards is the worsening AQI. Air Quality Index (AQI) numbers dominate ...