Only around 1% of the light energy that falls on producers A person or company that makes, grows, or supplies goods for sale. is actually absorbed and used for photosynthesis. Looking at the pyramid Structure that has triangles which meet together at the top. of biomass The total quantity or weight of organisms in a given area or volume. you can see that the amount of biomass The total quantity or weight of organisms in a given area or volume. decreases for each trophic In relation to nutrition and feeding. level. In the exam you could be asked to explain why.