The following examples show how energy is transferred from one trophic level to the next. 10% of 5000 kcals is 500 kcals
10% of 300 kcals is 30 kcals
10% of 20 kcals is 2 kcals
Describe the pattern you see.

Energy is transferred along food chains, however, the amount of available energy decreases from one trophic level to the next. The reason for this is that only around 10 per cent of the energy is passed on to the next trophic level. ... it is released as heat energy during respiration.

Explanation: Hope this help

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.