UNITS 3 AND 4. ECOSYSTEMS

• Ecosystems
• Biosphere
• Habitats

• Observe and identify the main characteristics and components of ecosystems.
• Recognise and explain some ecosystems (meadow, pond, forest, coast and city).
• Identify and explain some of the reasons for species' extinction.
• Observe and identify different habitats of living things

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Ecosystems - Natural Science from Marta Perales

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What is an ecosystem?


Levels of organisation

The Biosphere

Feeding relationships (producers, consumers...)

Food chains and food webs

On the following animation you can see an explanation about feeding relationships among living things and the food chain.


Explanation of the food chain


The food chain game

Build a food chain

The producers/decomposers game


Endangered animals

The IUCN Red list of threatened species

Help these living things build the perfect habitat!

A test about units 3 and 4