Food relationship among living things

Science

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Food chain

A food chain is a food relationship among living things

Green plants as producers

Green plants get energy from sunlight to synthesise their own food

Food chain arranged in a linear manner

Grass(producer) → Grasshopper(primary consumer) → Frog(secondary consumer) → Eagle(tertiary consumer)

Photosynthesis

Sunlight is the main source of energy to plants to carry out photosynthesis

Food web

Consist of two or more food chains linked together

A food web in a field

A food web in a pond

Living things depend on each other for food

A change of population of a certain species will affect the population of another species

Extinction of animals (might happen to animals that eat only one type of food)

Pandas only eat bamboo shoots. The population of pandas will be affected if there is a shortage of bamboo plants

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