false.
the composition of soil is not identical worldwide.
crop rotation
soil exhaustion
leaching
So basically this dude is saying the answer is crop rotation.
The correct answer is - cools, moves to the side, and sinks, making a circular pattern.
The mantle convection is the one responsible for the movement of the tectonic plates, as well as for the destruction, recycling, and creating of new crust on the surface of the Earth.
Once the material from the mantle reaches the surface, it starts to fill in the gap and expand, thus creating new crust as it cools off, and it moves sideways, which pushes the older crust. The older crust sinks at other place where it subducts, thus is getting melted into the mantle and recycled, and over time, that recycled material will come on the surface again, thus creating a circular pattern.
The Nile River Delta is an example of a formal region.
It is true!
A formal region is the one defined by the government and The Nile River Delta belongs to this category. This is the world's largest river deltas which is about one hundred and sixty kilometers long. It has been a populated and cultivated delta for more than a thousand years.
B. Geological Time Scale
C. Fossilogical Time Scale
D. Earth History Time Scale
Explanation:
The processes used by these actions are known as Weathering and Erosion.
Rainfall (water from the cloud) falls carrying out two major actions, firstly, it dissolves chemicals in the atmosphere and this solution causes chemical reactions on the various surfaces it falls on thereby weakening those surfaces through this action and secondly, by its impact on it wears off the surface. This second action becomes more vivid when you study the impact of a drop of water on a sandy surface. The impact dislodges the soils particles from others.
When there is significant amount of rainfall it leads to runoff (water running on the surface) and this runoff has enough force to move loose soil and rick particles to be deposited at a new location. The movement of these particles causes wear and tear on the surface on which they are moved and over time a new landscape evolves.
Water in the form of ice also causes significant landform changes especially in the temperate regions. This occurs through a process called ice or frost wedging. This essentially means water lodging in cracks and crags of rock get frozen and since frozen water expands it forces the crack to become wider and often times dislodging part of the rock surface.