Niger and Congo are two rivers after which countries are named (actually in both cases two countries each) - and those are African countries, so they must be in Africa.
Zambezi is a river in Angola and Namibia.
Tigris is a River in Mesopotamia, in Asia - so that's the correct answer!
Some meteorites contain organic compounds which may be precursors to today's living cells,<span> provides evidence to support this idea.</span>
Lithosphere
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Answer:
Yes, Nomadic way of life reflects the adaptation of the tribal group.
Explanation:
Nomadic life refers to a lifestyle where the person doesn't have a fixed habitat. They keep moving from place to place in search of food and shelter. Due to scarcity of food and shelter at one place, people used to keep moving from one place to other. This shows how adaptive these people were. They used to easily adapt themselves to the place they used to travel.
Nomads travel in groups or tribes. They have their own distinct form of living style.