Answer:
The Africa<em> </em><em>is</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>(</em><em>b</em><em>)</em>
The hydrosphere is basically everything that is water.
The demand for goods increased as goods became cheaper to produce. Hope this helps!
Probably by what plants and animals can live in the area in turn changing how each place makes food, some may only have access to onions and garlic with maybe beef and goat while others have deer and pigs with parsley and bayleaf