If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be: (a) 10 J (b) 0.1 J (c) 1 J (d) 0.01 J 

Dear Student,
 
Please find below the solution for your asked query:
 
At each trophic level about 10% of the energy of the previous trophic level is passed to the next food chain. This is known as 10% law. Now according to this law, only 10% of the energy is transfer to each trophic level. So if 100 joules of energy is available to produce then to primary consumer only 10 joule would be available and to the secondary consumer 10% of the energy of the primary producer would be transfer which is 1 joule.

Therefore, option (c) is correct.
 
Hope this information will clear your doubts about the topic.
 
Regards

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