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2. Food chain - Wikipedia

   en.wikipedia.org/wiki/Food_chain

   Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...

3. Food web - Wikipedia

   en.wikipedia.org/wiki/Food_web

   A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

4. Science education in England - Wikipedia

   en.wikipedia.org/wiki/Science_education_in_England

   The National Curriculum divides KS2 into lower KS2 (years 3 and 4) and upper KS2 (years 5 and 6). If a full science curriculum is offered as prescribed by the National Curriculum then year 3 should continue from KS1, but with more complex observations for the child to do on plants and animals, and materials—rocks, fossils and soils, are ...

5. Consumer (food chain) - Wikipedia

   en.wikipedia.org/wiki/Consumer_(food_chain)

   Consumer (food chain) A consumer in a food chain is a living creature that eats organisms from a different population. A consumer is a heterotroph and a producer is an autotroph. Like sea angels, they take in organic moles by consuming other organisms, so they are commonly called consumers. Heterotrophs can be classified by what they usually ...

6. Energy flow (ecology) - Wikipedia

   en.wikipedia.org/wiki/Energy_flow_(ecology)

   Energy flow is the flow of energy through living things within an ecosystem. [1] All living organisms can be organized into producers and consumers, and those producers and consumers can further be organized into a food chain. [2][3] Each of the levels within the food chain is a trophic level. [1] In order to more efficiently show the quantity ...

7. Trophic level - Wikipedia

   en.wikipedia.org/wiki/Trophic_level

   The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary producers such as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5. The path along the chain can form either a one-way ...