Answer: Scientists know that the Colorado River carved Grand Canyon. ... The age of the river falls between the rocks determined to be older than the river and those determined to be younger. Through this method, scientists have estimated an age for the river, and thus the canyon through which it flows, of 5-6 million years.
Explanation:
Answer:
C. supports American Colonization
Explanation:
Schools bring better knowledge among the society.Hospital improve health also contribute to the life expectancy period in a country.entertainment reduces the risk of creating crimes and also reduce the migration in the country.
