1. Homework on earthquakes
What is an ecosystem?
A natural system made up of plants, animals and the environment. Biotic are the living features and Abiotic are the non-living factors such as sunlight.
Food Chains and Food Webs
This shows the producers (plants) and the consumers (animals that eat the plants, and animals that eat other animals). The web is a bit more complex at showing the relationships.
Distribution of Biomes
Large ecosystems called biomes and each one as its own characteristics depending on its climate.
Homework on earthquakes
Go through and highlight important information.
Produce a revision card on the outline.
Answer the Exam question
What size are ecosystems?
They can be small scale like a pond or a hedgerow or they can be global such as Tropical Rainforests.
Changes to an ecosystem
Changes can occur naturally or by human activity such as cutting down a hedgerow or farmers using fertilisers.

2. Explain how abiotic and biotic are interrelated
6 marks
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Marks 1-2
Basic sentences about ecosystems. Does not use very much evidence to support explanation
Marks 3-4
Able to back up explanation with facts.
Marks 5-6
Able to produce a well structured correct explanation