Explain how human activities on a floodplain can increase the
probability of flooding.
[6 marks]
Answers could refer to two human activities in detail or several in less detail.
Human activities might include: urbanization, mechanized farming causing soil
compaction, deforestation, removal of pastureland for arable farming, construction
of artificial levees, straightening of the channel, removal of wetlands. A simple
list with no explanation should not be awarded more than [2 marks].
A list with some explanation should be credited more than [2 marks] where
appropriate.