Grana make up the membrane or a chloroplast.

 thylakoids

Explanation: A thylakoid is a membrane-bound compartment inside chloroplasts and cyanobacteria. ... Chloroplast thylakoids frequently form stacks of disks referred to as grana

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