5. Observe the graph given here. From the graph, find (i) the values of distances 'P' and 'Q' in 'm' and (ii) the value of time 'R' in 'seconds. Die - - -
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Photosynthesis is the process in which green plants use sunlight to make their own food. ... Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas. Chlorophyll is a substance in all green plants, especially in the leaves. Plants take in water from the soil and carbon dioxide from the air.
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The graph given here shows the frequency of sounds emitted by a source for 30 seconds. How many seconds of sound a normal human being be able to hear?
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