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Net Primary Productivity (NPP) is the energy or biomass that remains after autotrophs (producers) have used some of it for respiration (R). It represents the energy available for the next trophic level, i.e., herbivores (primary consumers). It is calculated as: NPP=GPP−R where GPP (Gross Primary Productivity) is the total energy fixed by autotrophs through photosynthesis, and R is the energy used in respiration.
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From a watch tower of 205 m height, the angles of depression of two cliffs in a horizontal line through the base of the tower are 45° and 30°. Find th...
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A boat is being rowed away from a cliff 240 m high. From the top of the cliff, the angle of depression of the boat changes from 60° to 45° in 3 ...
A vertical tower stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point on the plane, the angle of elevation of...
