Answer:
Many different ecological zones resulted in the ability to engage in different types of farming.
Step-by-step explanation:
The Andes Mountains are known for having many different ecological zones. These zones allowed early Andean civilizations to develop a variety of agriculture. For example, in higher elevations where the climate was dry, early civilizations could raise livestock like llamas. In lower regions and river valleys that had better access to water and a warmer, more moist climate, people could grow many crops. This made for diversity in economic activities.