1. Battle for the Biosphere
End of unit test
Battle for the Biosphere

2. 1A One mark for each correct point made.
Near the Equator
In between the Tropics
In Central Africa, South America and Asia.
Ai A large scale ecosystem or area of similar plants, animals and climate.
Aii Climate is not right
Not warm enough
Not enough rainfall

3. Bi One mark for each correct product
Bi One mark for each correct product. One mark for describing what the product is used for (why it is valuable).
Timber
Iron Ore
Medicines
Bii
C D B A

4. Biii Describes one service only
1-2 marks for mentioning a service and a human activity that could affect it.
3-4 marks for describing the service and clearly explaining how humans will change that service.
Possible services:
Water cycle
Atmosphere filtering of carbon dioxide
Tourism
Nutrient Cycle

5. Ci Brazil
Cii UK
Ciii It has decreased (1) Use data (1)
D1-2 marks for stating one or two ideas and how they will benefit the forest.
3-4 Marks detailed explanation of how the idea benefits either the environment or the people. Could include a case study such as Santa Lucia.
Ideas: Ecotourism
National Parks/Reserves
Selective logging