ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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50
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500
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5, 000
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50, 000
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Detailed explanation-1: -At the primary consumer level, the available energy is measured to be 1000 kilocalories (kcal).
Detailed explanation-2: -If a grassland ecosystem has 10, 000 kilocalories (kcal) of energy concentrated in vegetation, only about 1, 000 kcal will be transferred to primary consumers, and very little (only 10 kcal) will make it to the tertiary level.
Detailed explanation-3: -In a certain ecosystem, the primary producers represent 100, 000 kcal of energy.
Detailed explanation-4: -As producers are consumed, roughly 10% of the energy at the producer level is passed on to the next level (primary consumers). The other 90% is used for life processes, such as photosynthesis, respiration, reproduction, digestion; and ultimately transformed into heat energy before the organism is ever consumed.