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Feeding Relationships PowerPoint Presentation

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Slide 1 - Feeding Relationships A food chain shows a simple feeding relationship. Sun → All food chains start with the sun
Slide 2 - Feeding Relationships A food chain shows a simple feeding relationship. Sun → grass →
Slide 3 - Feeding Relationships A food chain shows a simple feeding relationship. Sun → grass → rabbit →
Slide 4 - Feeding Relationships A food chain shows a simple feeding relationship. Sun → grass → rabbit → fox
Slide 5 - All food chains start with ENERGY from the sun
Slide 6 - carbon dioxide from the air energy from sunlight (or light) water from the roots food transported to the rest of the plant
Slide 7 - carbon dioxide from the air energy from sunlight (or light) water from the roots food transported to the rest of the plant Photosynthesis
Slide 8 - Because plants produce their own food, they are called ‘Producers’
Slide 9 - The energy is then passed on to animals when they eat the plant.
Slide 10 - Animals of all shapes…
Slide 11 - ppt slide no 11 content not found
Slide 12 - ...and sizes!
Slide 13 - Because these animalsare the first to takethe food energyfrom the plants, They are called primary consumers
Slide 14 - Some of these primary consumers have predators. Other animals that feed on them
Slide 15 - Aphids are eaten by….
Slide 16 - Ladybirds
Slide 17 - Animals that eat primary consumers are called secondary consumers
Slide 18 - So far this is a straightforward food chain Sun → aphid → ladybird But in reality it is more complicated than that
Slide 19 - This bird eats ladybirds and aphids
Slide 20 - This bird eats smaller birds, mice, and rabbits
Slide 21 - Mice and rabbits have other predators
Slide 22 - What will eat the frog? What do you think the frog eats?
Slide 23 - Sometimes it’s not entirely clear who eats who!
Slide 24 - We can show what goes on with the help of a Food Web
Slide 25 - What would happen if a disease killed off many of the hawks?
Slide 26 - There will be nothing to eat the snakes, so their numbers will increase.
Slide 27 - All the frogs get eaten
Slide 28 - No frogs. More crickets
Slide 29 - Most of the cattail gets eaten by the crickets
Slide 30 - Now the crickets don’t have enough food so their numbers go down
Slide 31 - ..and so on. Numbers of each species have an effect on the numbers of the other species in the web.
Slide 32 - Use the food web worksheet to predict what might happen in the following situations: A) There is very little rain and much of the Marsh Grass and Cattail die off. B) Humans nearby bring cats into the area. C) The frogs eats some poisoned slugs from a garden
Slide 33 - This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.