1. The oldest and most stable part of a continent is craton.
2. A substance that enters Earth's cycles and does harm to living things is a pollutant.
3. The Cenozoic Era is also referred to as the Age of Mammals.
As part of the first five-year plan, collectivization was introduced in the Soviet Union by general secretary Joseph Stalin in the late 1920s as a way, according to the policies of socialist leaders, to boost agricultural production through the organization of land and labor into large-scale collective farms (kolkhozy) ...
A, I just know its not any of the other ones
a lot of people have the misconception the nuclear energy is bad for the environment when in reality, it's one of the healthiest formats of energy for the planet; when adequately maintained, people should get more educated on the subject.
Its B because it increases the amount of dust carried by wind