There is a grand total of 196 countries in the world. Hope this helped.
C. They are based on evidences obtained from investigation
Carbon dioxide or CO2 is one of the main greenhouse gases that accelerates global warming.
A greenhouse is a place where a particularly cold or hot climate is maintained.
Scientifics use this analogy with gases like CO2 because what they generate is a coat that keeps the sun's rays inside the oxygen layer, so these rays enter and heat the earth, unable to escape.
Industrial factories and cars are the largest carbon emitters. It all started in the Industrial Revolution
They are believed to cause divergence of lithospheric plates at the <span>mid atlantic ridge
</span><span> The currents reallocate heat from a certain place to another through mass motion of fluid (such as molten rock or water), The difference in temperature between core and lithosphere material generate enough force for the divergence to happen.</span>
Eventually the Sunni majority (named for sunna, or tradition) won out, and chose Muhammad's close friend Abu Bakr to become the first caliph, or leader, of the Islamic community. ... Within the century after Muhammad's death, his followers had built an empire that stretched from Central Asia to Spain.
I hope this makes sense and helps