I think the answer is C, but I'm not sure.
Answer:
According to researches, the Native population in Americas before the arrival of Europeans was around 100 million people, while some are estimating that it was even more.
Explanation:
Before Europeans arrived in America, many native culture were developing and some were even at their peak.
But when the conquistadores came, they killed a lot of them, while a lot of them died due to diseases that were brought by Europeans.
The population in just a couple of decades fell from 100 millions to just a couple of millions.
Answer:
B
Explanation:
esto se debe al movimiento de rotación de la Tierra de Oeste a Este.
Answer: A constructive plate boundary creates ridges
Explanation: A constructive plate boundary, sometimes called a divergent plate margin, occurs when two tectonic plates move apart. Volcanoes are formed as magma wells up to fill the gap and molten rocks from the mantle below spread out and harden, eventually forming a ridge of new land/rock. The Mid-Atlantic ridge is an example of a constructive plate boundary.
Hope this helped x