Explain the difference between food-chain and ecosystem. Explain the difference between food-chain and ecosystem.

A food chain shows the transfer of energy through a single chain of animals. For example, energy comes from the sun, a producer uses energy from the sun as food, a secondary consumer eats the primary consumer, a tertiary consumer eats the secondary consumer, and so on. An ecosystem contains many intertwining and interlocking food chains. Ecosystems contain both abiotic and biotic factors.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.