Soil with plant and Earth worm Sparrow Sparrow hawk Produce r predato r consumer Top predato r Food chains LO: draw food chains/webs and explain how energy is lost at each level of a food chain TASK: can you re arrange this information into a food chain starting with a producer
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Soil with plant and remains Earth worm Sparrow Sparrow hawk Producer predator consumer Top predator Food chains LO: draw food chains/webs and explain.
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Soil with plant and remains
Earth worm
Sparrow
Sparrow hawk
Producer
predator
consumer
Top predator
Food chains LO: draw food chains/webs and explain how energy is lost at each level of a food chain
TASK: can you re arrange this information into a food chain starting with a producer
Mr Gaynor
compost
Make a food chain
Mr Gaynor
compost
• Pond food chain
• Food chain song
Producers
• Green plants make their own food using carbon dioxide and water in the presence of sunlight. Light energy is converted to chemical energy in the process.
Consumers obtain their energy and nutrients from other organisms on
which they feed.
plants
primary consumer
secondary consumer
tertiary
consumer
Each stage in a food chain is called a trophic level.
->Passes out of body as faeces and other excretory products
How Is This Energy Lost?
->Lost as heat during respiration
Total energy level decreases progressively along the food chain.
Times Media CD
Write down the longest food chain you can see in this food web
1. Here are three food chains:• A grass rabbit fox• B wheat field mouse fox• C wheat field mouse grass snake1 Sketch a pyramid of numbers for food chain A.2 Use all three food chains to draw a food web.3 Name one producer in the food web. 4 Name a primary consumer. 5 Name a secondary consumer. a If the field mice died, what would happen to the
number of grass snakes?b Why would this happen?c If the field mice died, what might happen to the
number of rabbits?d Why might this happen?
Summary
Learning Logs:
On your book answer 3 of the following statements: