What kind of organism makes up the base of any ecological pyramid?

Plants

Explanation: Plants are all ways at the start of the food chain becuase they are the only thig that can make their own food. Herbivores eat the plants to gain energy and carnivores eat the herbivores to gain their energy.

the base of the pyramid is composed of species called autotrophs, the primary producers of the ecosystem

what bodys are there orbiting?

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!