living organisms and ecosystems 4th grade natural science

1. UNIT 2:
LIVING ORGANISMS
AND ECOSYSTEMS
4º PRIMARIA
Natural science

2. Ecosystems
A habitat
Physical conditions:
climate, water, type
of land,etc.
Communities of
living organisms
Adaptation
place
co -exist with others
Relationships
Food chain
Producers
Consumers
Herbivores Carnivores
Omnivores
Decomposers
are composed of

3. Ecosystems
Go through Changes
Natural
Like:
- Forest fires
- Floods
- Volcanic eruptions
Produced by humans
Like:
- Pollution
- Overexploitation
- Building
- Introduction of exotic species

6. Terminology
Ecosystem Services: This the technical term for the benefits
humans and other living things get from ecosystems. These
services are in four groups: Supporting services, Provisioning
services, Regulating services and Cultural services.
Adaptation: An adaptation is a way an animal's body helps it
survive, or live, in its environment. A good example is the
polar bear. Its while fur helps it to camouflage, so its prey
cannot see it. Its Thick fur also provides the warmth to help it
survive in its frozen environment
Habitat: the area where an organism lives, including the
biotic and abiotic factors that affect it.The place where a
particular population (e.g., human, animal, plant, micro-
organism) lives and its surroundings.
Symbiosis: Relationship in which two species live closely
together, usually benefiting from each other.
Food Web: The complex feeding network occurring within
and between food chains in an ecosystem, whereby
members of one food chain may belong to one or more other
food chains.

25.  http://www.sheppardsoftware.com/con
tent/animals/kidscorner/games/foodch
aingame.htm
 http://www.sheppardsoftware.com/con
tent/animals/kidscorner/games/produc
ersconsumersgame.htm

26. Food chain game:
 http://eschooltoday.com/ecosystems/b
uild-a-food-chain-game.html