The pH of acid rain is less than 5.6. — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Understand that the biosphere is the region of the Earth that contains living organisms and where these organisms interact. Step 2: Option (a) describes the biosphere as the zone in which individuals interact with one another and with their physical environment. Step 3: Therefore, option (a) is the correct definition of the biosphere.