It means that all living things, including microbes, plants, animals and humans, cannot live without water and air. These are essential for breathing, growth and carrying out life processes.
Class 5 NCERT EVS Our Wondrous World Chapter 3 The Mystery of Food solutions
Class 5 EVS Textbook Our Wondrous World Chapter 3 The Mystery of Food question answer
Saying all life needs water and air means that every living organism — from tiny microbes to large animals and humans — depends on these for survival. Water is needed for digestion, transport of nutrients and growth, while air provides oxygen for breathing. Even microbes require water and air for their life processes and growth.
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