Biomass - Biologocial material in particular the total mass of living material at a specified level in a food chain or in a specified area
Chemical energy - Energy stored in the chemical bonds of compounds such as those in the cells of living organisms
Tropic level - A level in a food chain, such as producer or primary consumer
Respiration - The breakdown of glucose in cells to release energy, co2+water
An animal makes biomass by eating. When an animal eats some of the chemicals from it's food are absorbed, the others are converted to faeces. The animal also makes waste products like urine.
Energy/biomass is lost in faeces, urine, respiration as heat, heat and chemical reactions.
Food chain:
Producer (grass) > Primary (caterpillar) > Secondary (Bird) > Tertiary (Fox)
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