¿a qué se dedicaban los índigenas antes de la llegada de los españoles? a. a la agricultura c. al comercio b. a la ganadería

a. A la agricultura

Explanation:

This question could be better answered with more context, as there were different indigenous people along the South, Central, North America and the Caribbean who were conquered bu the Spanish. However, most of these cultures dedicated mostly to agriculture, for example the Incas developed a complex system of platforms so they could grow crops in the slopes of mountains. However, trade was also practiced along different peoples, as some had resources such as gold, salt, or others.

when the outside temperature is too cold, an endothermic animal can generate heat by shivering. endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature.