East of the Rocky Mountains is the so called Midwest region in North America. This vast region is mostly consisted of lowlands covered with grasses, and they are bordered with mountain ranges on both the east and the west, which prevents the maritime influence.
Because of this natural barriers, this region has mostly continental air masses influencing its climate. In the colder period of the year they are continental polar air masses, forming over Canada and moving southwards. In the warmer period of the year they are continental tropical, forming in the southern part of this region and moving northwards.
This type of air masses bring in very hot and dry summers, and very cold and snowy winters.
The crustal plate is the section of the lithosphere that carries the crust.
Pollution can come from natural sources such as volcanoes and wildfires which shown in the image. Human sources of pollution include chemical pollution from industries and the use non-friendly environmental factors like cars and buses.
Answer:
Due to magma intrudes the rocks
Explanation:
The age of rocks is called its absolute age, Geologists find these ages through measuring the amount of radioactive elements in rock when its formed. Thus with the passage of time these elements change as well as the parent rock get decayed. Generally there are three type of rocks such as the Igneous, Metamorphic and the sedimentar, they differ on the basis of their texture and size and formation. There exists some kind of relationship between these rocks and due to the process of earths evolution the rocks also evolve. Like multiple bands of sedimentary and metamorphic rocks are found in layers of rock. The relationship can be due to magma, facture and folds, accumulation of sediments or complete destruction of rocks due to magma.