Extensive reading 8 across the curriculum.0:01
Science Exercise 3, page 83 what's a producer?0:06
All energy originally comes from the sun.0:23
Green plants can't hunt or shop for food, so they simply use sunlight and water to make it green.0:27
Plants usually start food chains.0:34
They are called producers.0:36
Animals such as grasshoppers get their energy from eating green plants like leaves.0:42
As they only eat plants, they are called herbivores.0:48
Carnivores like lions or some birds only eat meat.0:52
Omnivores eat plants and animals.0:56
Anything that eats another plant or animal to get energy is called a consumer.1:00
The food chain ends with dead animals that fungi and bacteria use as food.1:09
These organisms break down the complex organic compounds which then return to the soil so that plants can use them again.1:15
That's how the food chain starts all over again.1:22
Why is the food chain important?1:26
The food chain provides the energy that all living things need in order to survive.1:29
If there is a break in the link in the chain, then all organisms above this link are in danger of extinction.1:36
Imagine the world without plants.1:44
How would animals survive?1:46
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