In a food pyramid there is typically less biomass at the top( there are very few individual tertiary consumers whereas there are numerous individual producers). In three to five sentences explain this phenomenon citing evidence relating to energy flow and how plants support ecosystems

At the base of the food pyramid are producers, such as plants, which capture the sun's energy and convert it into food through photosynthesis. This means that they have access to the most abundant source of energy in an ecosystem. As energy moves up the food chain, some of it is lost as heat through respiration, so there is less energy available to support higher trophic levels. This is why there are fewer individual tertiary consumers at the top of the food pyramid, as they require more energy to sustain themselves compared to producers. Overall, plants are crucial for supporting ecosystems by providing energy and nutrients for all other organisms to survive and thrive.