This picture of the incan city of machu picchu shows an agricultural technique used by incan farmers who adapted to their mountainous environment. which of the following terms describes this agricultural technique?

a. terracing

b. commercial farming

c. silver mining

d. slash-and-burn

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

Which describes italy’s mediterranean climate? a. moist in the summer and dry in the winter b. mild and wet all year round c. cool in the summer and warm in the winter d. hot in the summer and mild in the winter

The ethnic conflicts in darfur have led to an attempt to destroy a whole people known as