Answer: carbohydrate, protein and fat.
There are 3 kind of macromolecules: carbohydrate, protein, and fat. Carbohydrate mostly found in a plant like rice, wheat, barley. In this case, it's on the pizza dough.
Protein mostly found on muscle or meat. Some meat also has fat because they are not separated when cut, like bacon. Fat found in the subcutaneus tissue of animal or oil. Sausages, pepperoni, and bacon have much protein and some fat.
codes for a specific trait
I hope this help and I will try again if it is wrong.
Answer:
If there wasn't a lot of organisms and energy in the productive part of the triangle, then there wouldn't be a lot of third level organisms. The energy piramid would be a lot smaller then what it is here, and maybe if the energy source was low then there might not be such a vast varity of animals in the ecosystem.
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