Calculate the efficiency of photosynthesis, Biology

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Figure  shows the flow of energy through the trees in a forest ecosystem.The numbers represent inputs and outputs of energy in kilojoules per m2  per year.

(a)  (i) On Figure, draw a ring around the number which indicates the energy entering the system via photosynthesis.
     (ii) The total energy available to the plants in the ecosystem is 1880000 kJ per m2  per year.

Calculate the efficiency of photosynthesis.

1946_Calculate the efficiency of photosynthesis.png

(b) Suggest  four reasons why so much solar energy is  not used in production in the forest ecosystem.
(c) In what form will energy from plant respiration escape from the ecosystem?


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