By the change of environment , by the process
I believe your answer is the year 2020
A. Canyons and sedimentary deposits
Answer:
The role of human systems and political systems in Russia is very complex, Poverty is widespread, living standards square measure low and, typical of a non-developed country, the exportation of natural resources fuels abundant of Russia's economy. Russia is borderline at the best on most developed-country metrics. the country's per capita GDP is $24,451 and these all factors shapes the Russian core.
Hope it helps!
Pretty sure C) the Rio Grande.
