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UNIT 2:LIVING ORGANISMS AND ECOSYSTEMS
4º PRIMARIA Natural science
Ecosystems
A habitat
Physical conditions:
climate, water, type of land,etc.
Communities of living organisms
Adaptation
place
co -exist with others
Relationships
Food chain
ProducersConsumers
Herbivores Carnivores
Omnivores
Decomposers
are composed of
Ecosystems
Go through Changes
Natural
Like: - Forest fires
- Floods- Volcanic eruptions
Produced by humans
Like: - Pollution
- Overexploitation- Building
- Introduction of exotic species
TerminologyEcosystem 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.
http://www.sheppardsoftware.com/content/animals/kidscorner/games/foodchaingame.htm
http://www.sheppardsoftware.com/content/animals/kidscorner/games/producersconsumersgame.htm
Food chain game:http://eschooltoday.com/ecosyste
ms/build-a-food-chain-game.html