Erosion, because after the sedimentary rock erodes it will then be deposited as in the form of pebbles or debris, from there it will undergo the process of compaction and cementation only to be eroded again.
Answer:
cells are the smallest unit of life
The Basin System of Irrigation was d<span>eveloped thousands of years ago.
It is now used only in parts of southern Egypt and northern Sudan. It only supports one main crop because it is dependent on the annual flooding of the Nile.
TRUE :)</span>
So, the question is asking: why has (over the course of human history) rural settlement declined (and it is suggested that this is connected to humans moving away from the rural areas, to urban areas, rather than human population declining in general:
this process is called urbanization and its major cause is that on the one hand, food in the industrialized societies can be produced more effectively so there is less work on farm, and on the other hand the service sector has increased, which means that there is more work in the cities.
Cultures most typically develop without a conscious planning (but there are exceptions! So i would say that while B) and C) are not typically or commonly true, they could be true!).
They are usually simply a product of the interaction of people and their environment.
The most reliable way in which cultures are unique is when they''re not influenced by other cultures, so the best answer is A) The climate of the area may isolate the culture, preventing outside influences.
