Population and the Environment

1. What is organic matter in the A horizon called? (5)
2. What is a hard, continuous layer of deposited iron called in podzols? (4, 3)
5. Why is the water travelling through the soil more able to dissolve certain minerals (Fe and Al compounds) in podzols? (6)
8. What is the E horizon mostly made up of in podzols? (6, 4, 4)
9. What is a common human activity on podzols - due to the coniferous trees (8)
10. Fully developed soil that are mature and have developed from the interaction between climate vegetation and parent rock over a long period of time (5)

2. What encourages fast chemical weathering of bedrock in latosols, apart from the high temperatures? (8)
3. 'Year-round plant growth means that the O horizon is quite.....' (5)
6. What colour are latosols? (4, 3)
7. What are the horizons - in order of surface to bedrock? (1, 1, 1, 1, 1)

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