Location,place,movement,region, and human-environment interaction
Is that an assignment or what
there are more than 200 countries in the world
The main reason for the wall's construction had always been defense. Since China's first dynasty, the empire faced a near-constant threat of attack from the nomadic tribes to the north. This included those famed Mongols as well as lesser-known groups like the Xiongnu and the Göktürks.
Initially if you could make sure that after you blow up an asteroid you will end ... The problem here lies in the fact that we know little about the internal .... A grain of dust is enough to deflect a billiard ball by a large span, given ...To blow up an asteroid with a nuclear bomb would be a major undertaking. ... An asteroid like her would spell big trouble for our planet if she ever got the notion ..Luckily for us, asteroids the size of Bennu, and giant asteroids like the one ... They enter our atmosphere as meteors, where many blow up in mid-air; ... and tracks new objects and will issue warnings about possible impacts.
