LIFE SCIENCE

Detailed explanation-1: -Plants or other photosynthetic organisms (autotrophs) are found on the first trophic level, at the bottom of the pyramid. The next level will be the herbivores, and then the carnivores that eat the herbivores.

Detailed explanation-2: -Because autotrophs do not consume other organisms, they are the first trophic level. Autotrophs are eaten by herbivores, organisms that consume plants. Herbivores are the second trophic level. Carnivores, creatures that eat meat, and omnivores, creatures that eat all types of organisms, are the third trophic level.

Detailed explanation-3: -At the bottom of the pyramid, you have producers. These are usually plants or other photosynthetic organisms, such as algae or photosynthetic bacteria. Producers are autotrophs, meaning they are self-feeding organisms that do so by making their own organic molecules.

Detailed explanation-4: -The top layer of the energy pyramid contains apex predators. These are mostly carnivorous animals that have no natural predators. The pyramid shape is used to represent the flow of energy because of the way that energy is used up and lost throughout the system. The primary producers take in energy from the sun.