100 POINTS What happens when organisms reproduce
a. they grow and develop
b. they sense change in their environment
c. they maintain a stable internal environment
d. they make organisms similar to themselves

d. they make organisms similar to themselves

Explanation:

The three main reasons that the Native population declines in Spanish colonies was because they were overworked by the Spanish, they also picked up diseases like small pox, and they faced hunger. Overall, the Spanish did did not see to it that the Natives would be cared for.