Ina a food chain,

Producer. Energy available = 10,000 J

[∴ Plants are able to synthesize only 1% of total energy available to them

∴ Energy Produced by producer = 1% of 10,000 = × 10,000 = 100 J

Primary consumer. Energy available = 100 J

∴ Energy transfer from primary consumer to secondary consumer = 10% of 10 J = ×100 = 10 J

Secondary consumer. Energy available = 10 J

∴ Energy transfer from primary consumer to secondary consumer = 10% of 10 J = ×1 = 1 J

Tertiary consumer. Energy available = 1 J

∴ Energy transfer from secondary consumer to tertiary consumer = 10% of 1 J = ×1 = 0.1 J