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2 results for “food chain”.

• Why There Are So Few Top Predators — The 10% Rule of Energy
  A forest can feed ten thousand deer, a thousand wolves at most, and one bear family per valley. The reason is not hunting skill or territory — it is thermodynamics, and the same arithmetic that limits your food chain also explains why eating lower on it feeds more people.
• How Photosynthesis Works: The Reaction That Powers Most Life
  A leaf is a solar factory that assembles sugar out of air and water, and the oxygen you are breathing is its waste product. Here is the two-act machinery of photosynthesis — the light reactions and the Calvin cycle — and why the details explain C4 crops, houseplants, and the entire food chain.