4) African economies became dependent on the sale of cash crops and raw materials.
Answer:
1. Palaeolithic people moved around a lot, depended on wild animals and plants for food, and did not have permanent homes.
2. They used primitive stone tools and their survival depended heavily on their environment and climate.
3. Palaeolithic humans discovered agriculture and animal husbandry, which allowed them to settle down in one area.
4. Palaeolithic humans lived a nomadic lifestyle in small groups.
Explanation:
hope this helps
Answer:
In simple words, Representative surveys are valuable because they mean that the questionnaire contains all different categories of individuals and also that the correct blend of individuals is questioned. Your results will be skewed if your study isn't representative. The poll's inconsistency was due to an unbalanced, non-representative sample.