What is an important chemical that contains
nitrogen which is vital for all living
things

Amino acids

Explanation:

Nitrogen is a major part of amino acids. Which are the building blocks of proteins and nucleic acids.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg