The correct answer is - climate change.
Even though throughout the geological past life on Earth have experienced extinctions caused by multiple different factors, like the extinction of the dinosaurs by a meteor crash, or the biggest extinction that the Earth have ever witnessed, the Permian extinction, caused by massive volcanic activity, still the dominant factor had been the climate change.
The climate change is the factor that was most often responsible for extinctions, and this is very simply because the animals are adapting to certain types of climate, and when the climate changes rapidly they are stuck in an environment in which they are not specialized to survive in, thus are dying out. A nice example is the end of the last ice age, when the temperatures grew significantly in a very short amount of time and the landscape changed dramatically, so most of the mega-fauna died out.
Photovoltaic cell converts light energy to electricity so ans is D<span>: Light excites electrons that create a current
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Hello!
The correct answer is False. The Appalachian mountains run for 1,500 miles along the east coast, not west, of the United States from Northern Alabama to Maine.
In the illustration given ...
THE UNITED STATES has an absolute advantage in producing pillows, and
SPAIN has an absolute advantage in producing televisions.
Absolute advantage refers to one person (or one nation) having a consistent advantage over another in making a particular product efficiently and best.
The production of a good or performance of a skill for which a person is best suited is termed comparative advantage. Or, on a national level, the production of goods for which a nation's resources are best suited is comparative advantage.
Incidentally, the USA no longer has absolute or comparative advantage in the production of televisions. In the 1950s, at the dawn of the television era, there were over 100 television manufacturers in the US, producing about 11 million TV sets each year. But today, according to Politifact, "evidence suggests about 99 percent of sets sold in the United States are fully made and assembled overseas, mainly in Asia."