A) fresh water: fresh water means it is water that is fresh and it doesn't come from the sea or isn't polluted.
B) groundwater: it is presented beneath Earth's surface in soil pore spaces and in the fractures of rock formations
C) aquifer: it is a underground layer of water-bearing permeable rock.
D)irrigate: it is supply water to help land or crop grow.
E) physical water scarcity: it occurs when and where there is not enough water to meet both human demands and those of ecosystems to function effectively.
F) economic water scarcity: it is caused by a lack of investment in water or infrastructure of insufficient human capacity to satisfy the demand of water in areas.
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North Africa is predominantly Arab and relatively more developed. Many residents identify more with the Middle East than they do with the larger part of the continent. ... But when it comes to an African identity, some sub-Saharan Africans believe they have more claim to the continent than their northern counterparts.
Answer:
push factor is crime and high costs
pull factor good climate and low costs
forced migration is military drives you out of country
chain migration is newcomers help others
Ans: waterfalls are most common where hanging valleys occur. Such valleys generally form when glacier ice deeply erodes a main or trunk valley, leaving tributary valleys literally hanging far above the main valley floor. After the glaciers have melted and withdrawn, streams from such tributary valleys must fall in order
