People in North Africa have employed several methods to modify the environment to make it more suitable for farming. The options you provided highlight some of these practices:
-
Terracing on mountainsides: This technique is used to create flat areas for farming on sloped land, which helps reduce soil erosion and allows for better water retention.
-
Irrigation: This is a crucial method in arid regions like North Africa. Farmers have developed various irrigation systems to bring water from rivers or other sources to their crops, helping to sustain agriculture in dry conditions.
Additionally, while slash-and-burn agriculture is more commonly associated with tropical regions, some forms of land management similar to this practice may also occur in North Africa, though it's not as prevalent.
Importing crops that are suitable for dry environments is another method that has been used to adapt agricultural practices to local conditions.
In summary, the correct responses would include all efforts mentioned: terracing, irrigation, and importing suitable crops.
11 answers