Answer:
here is a long answer
Change champions are individuals within an organization that volunteer or are selected to facilitate change. The champion is an active member within the change management project during all of its stages (Thompson, Estabrooks & Degner, 2004).
The correct answer is - Large numbers of migratory birds;
The number of the migratory birds has always been pretty high and it hadn't resulted in the drying up of the Ogallala Aquifer, not to mention that those birds can not even reach that water because it is underground. Also, the number of the migratory birds have been steadily lowering, so even if they were using that water for drinking, it wouldn't have caused the drying out.
The Ogallala Aquifer has started to dry out because of numerous reasons, with the usage of its water for irrigation being the prime reason. The droughts have become longer, and the temperatures little higher, while the rainfall slightly smaller, so all of that affected the reserves of water in the aquifer negatively.
Both the Maya and the Inca had similar social stuctures;
men and women were to be considered close to equal, though, in some instinces, women were still lesser to men. Both drained swamps and carved terraces for agriculture, which they depended on heavily, like all other ancient civilizations in the Americas.
The Maya and Inca both shared a similar calender system, though, the Inca calender was a bit more complicated, and both civilizations built great stone monuments.
Plus, they practiced metallurgy, sacraficial rituals, and polytheism
