Final answer:
The largest source of energy in an ecosystem is the sun, which is harnessed through photosynthesis. This energy is transferred through the food chain, supporting the diversity of organisms in the ecosystem.
Step-by-step explanation:
The largest source of energy in an ecosystem is the sun. The sun provides light and heat energy through a process known as photosynthesis. Green plants, algae, and some bacteria use the energy from sunlight to convert carbon dioxide and water into glucose and release oxygen as a byproduct.
This glucose serves as the primary source of energy for all other organisms in the ecosystem. It is transferred through the food chain as organisms consume each other. For example, herbivores eat plants and obtain energy from the glucose stored in their tissues. Carnivores then eat herbivores and obtain energy from the glucose stored in the herbivores' bodies.
Ultimately, the sun's energy flows through the entire ecosystem, driving the processes of life and supporting the diversity of organisms that inhabit it.
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