Changing levels of Lake Chad, in Saharan North Africa in metres Figure 1 shows changing levels of Lake Chad, in Saharan North Africa. Lake Chad disappeared completely in about 20,000 BC, during the last Ice Age. In about 11,000 BC it reappeared. Today, its level is about the same as it was in AD 1000. Figure 2 shows Saharan rock art (ancient drawings or paintings found on the walls of caves) and changing patterns of wildlife. Use the above information about Lake Chad to answer the questions below. Non MCQ Question In about which year does the graph in Figure 1 start? Why has the author chosen to start the graph at this point?
Changing levels of Lake Chad, in Saharan North Africa in metres
Figure 1 shows changing levels of Lake Chad, in Saharan North Africa. Lake Chad disappeared completely in about 20,000 BC, during the last Ice Age. In about 11,000 BC it reappeared. Today, its level is about the same as it was in AD 1000.
Figure 2 shows Saharan rock art (ancient drawings or paintings found on the walls of caves) and changing patterns of wildlife.
Use the above information about Lake Chad to answer the questions below.
Non MCQ Question
In about which year does the graph in Figure 1 start?
Why has the author chosen to start the graph at this point?
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