State the ten percent law. 

Assertion (A) : Transfer of food energy from one trophic level to other is based on ten percent law. Reason (R) : Only about 10% is stored at every level and rest of them (90%) is lost.

(a) State boyle's law. (b) State Newton's second law.

State newton's second law

According to ten percent law, how many Joules of energy does the individuals at the fourth level will receive, if the individuals at first trophic level receives 1000 Joules of energy?