The Flow of Energy Through Nature’s Food Webs

Sunlight Starts It All — Every food web begins with the Sun — plants and algae capture its energy and pass it up the chain of life.
Producers Power the Planet — Green plants, phytoplankton, and some bacteria make their own food through photosynthesis, fueling all other life.
Consumers Keep It Moving — Herbivores eat plants, carnivores eat herbivores, and omnivores eat both — energy flows step by step through them all.
Decomposers Close the Loop — Fungi, worms, and microbes break down waste and dead matter, recycling energy back into the soil.
Energy Loses Heat — With every bite, energy transfers — but some escapes as heat, which is why food chains rarely have more than a few levels.
Webs, Not Chains — Real ecosystems overlap — animals often eat from multiple sources, creating complex food webs instead of simple lines.
Top Predators Matter — Apex species like sharks and eagles keep ecosystems balanced by controlling populations below them.
The 10% Rule — Only about 10% of energy passes from one level to the next — the rest is used for movement, growth, or lost as heat.
Human Role in the Web — Our farms, fishing, and energy use reshape natural food webs — sometimes strengthening, sometimes disrupting them.
The Circle of Life — In nature, energy never stops — it flows, transforms, and returns, connecting every living thing in one endless cycle.