In geology, a graded<span> bed is one </span>characterized by<span> a systematic change in grain or clast size from one side of the bed to the other. Most commonly this takes the form of normal grading, with coarser sediments at the base, which grade upward into progressively finer ones.</span>
Answer:
The theory of the formation of fossil fuels is that fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons.
Explanation:
A is not correct because the nitrogen is not a gas that is dominant in fossil fuels.
B is not correct because the oxygen can not turn to carbon in any manner.
C is correct because the consensus about the formation of fossil fuels is that after the organisms were dying out, they were getting buried (usually in the soft layers of the ocean floor), over time with the higher temperatures and pressure from below managed to change their structure and create hydrocarbons.
D is not correct because there hasn't been any evidence so far that there are fossil fuels on comets and asteroids.
Our solar system is heliocentric.
Helio is greek for Sun centered, and our solar sytem relies and revolves on the sun.
Answer:
Because of its proximity to Arab lands, many people in the Sahel have adopted Islam.
Explanation:
The Sahel is a region in Africa. It is located between the Sahara Desert and sub-Saharan Africa, being a relatively dry region dominated by the steppe. This region, on its north, has boundaries almost exclusively with Arab dominated countries, so naturally, the people living in the Sahel have had some influence from them.
One of the biggest influences among the people living in the Sahel from the Arabs has been in the form of religion. The majority of the population in the Sahel has adopted Islam and abandoned their native religions. The adoption of Islam has contributed to numerous cultural changes of the people in this region since Islam as a religion has strict rules that people need to follow in order to be considered as Muslims, so numerous native cultural traits have also been abandoned.
Nordic countries and United Kingdom
