Answer:
Asteroids
Explanation:
Much of our earth's water supply comes from the asteroids.
More research done suggested that much of the earth's water is being delivered by the asteroids.
The origin of earth's water can be tracked down by analyzing the ratio of the two isotopes of hydrogen molecule. On isotope is the ordinary hydrogen and the other is the deuterium.
Research and study suggests that there is a close match between the earth water's ratio of deuterium to hydrogen to that of the asteroids, which is rich in water and elements such as nitrogen and carbon.
Thus the answer is --- "Asteroids"
The geography of Southwest Asia opens up a space for a good connection between the countries and thus to create similar, if not same, cultural traits because of the absence of natural blockades between them, so the communication is easily manageable. Still, the region is dominated by deserts, so even though there's no big mountain ranges between them, it makes it difficult, apart from the coastal areas. Now even though the open terrain usually contributes to good relations, it occasionally causes problems as well, and this region is a perfect example of that, because lots of the countries are in very bad relations.
economic system. the way a society uses its resources to satisfy people's wants.
traditional economy. ...
market economy. ...
command economy. ...
communism. ...
market. ...
laissez faire. ...
capitalism.
During the Progressive Era, protections for workers and consumers were strengthened, and women finally achieved the right to vote.