The document describes the food chain and the different levels within it. Producers, like plants, use sunlight to produce their own food. Consumers, including primary, secondary and tertiary consumers eat other organisms for food and move energy through the chain. Decomposers break down dead organic matter and release nutrients back into the system.

2. FOOD CHAIN
 Linkages of organisms within
an ecosystem, in which
each link feeds on the one before it
and is fed on by the one after it.

3.  Food chain shows how each living
thing gets its food. Some animals eat
plants and some animals eat other
animals.

7. PRODUCER
 The first link in the chain (called
herbage).
 Plants are called producers because they
are able to use light energy from the Sun to
produce food (sugar) from carbon dioxide
and water.

8. GREEN PLANTS EXAMPLE OF
PRODUCER

9. CONSUMER
 Animals cannot make their own
food so they must eat plants and/or
other animals.

12. PRIMARY CONSUMER
 First consumer.

13. Animals that eat only plants.

14. INSECTS AN EXAMPLE OF PRIMARY
CONSUMER

15. SECONDARY
CONSUMERS

16. Consumers that eat herbivores.

17. FROG EXAMPLE SECONDARY
CONSUMERS

18. TERTIARY CONSUMERS

19. Carnivores that eat other carnivores.

20. EAGLE AN EXAMPLE OF TETIARY
CONSUMERS

21.  Animals and people who eat
both animals and plants are
called omnivores.

23.  Bacteria and fungi which feed on
decaying matter.
 These decomposers speed up the
decaying process that releases
mineral salts back into the food chain
for absorption by plants as nutrients.

24. FUNGI EXAMPLE OF
DECOMPOSERS