What is a Food Chain?

The video explains how energy from the sun is transferred through living organisms via food chains. Producers convert solar energy into sugars through photosynthesis, forming the base of the food chain. Herbivores consume plants, and carnivores eat herbivores, but energy is lost at each stage. This energy loss is depicted in a pyramid of biomass, showing fewer organisms at higher levels. Decomposers recycle nutrients from dead organisms back into the environment, completing the cycle. Ultimately, nearly all energy in living things originates from the sun.

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