Answer:
The answer is Indo-European and Sino-Tibetan! :D
Explanation:
Explanation:
As early people began farming the Fertile Crescent, small villages began to form. With the further development of farming, many of these small communities began to grow into large, complex cities. Located in present day Iraq, the Fertile Crescent is a “half moon” shaped area that lies between two rivers.
Answer:
Explanation:
Catalytic converters are used as an exhaust emission control device and are used to remove toxic gases and products by catalyzing the redox reactions.
The Corporate Average Fuel Efficiency (CAFE) standards were set of rules enacted in the USA to increase the efficiency of fuel engines and hence to reduce the emission rates .
The ethanol as compared to the conventional gasoline emits 50 per cent or lesser greenhouse gases to the environment .
Answer:
isostasy
Explanation:
Of iso, same; stasy, state; word derived from the Greek; its meaning speaks of the equilibrium state of the portions of the earth's crust and how they are permanently compensated. It is not a static equilibrium but a dynamic one, its behavior implies the recognition of erosion and sedimentation phenomena as exogenous factors and the rearrangement of cortical blocks as endogenous factors.
The earth's crust, having a lower density than the underlying layer (outer mantle), will submerge in it and float, in a measure proportional to the height, that is to say that the mountains will have deeper roots than the plains, the lowlands or the bottoms sailors
The theory has been widely known in some cases as "Plate Tectonics" and in others as "Continental Drift". Today, the first title conforms more to the scientific truth since the continents travel as passengers on the tectonic plates whose areal dimension is much greater.