The correct answer is b. - tsunamis.
Tsunami is a Japanese word meaning harbor wave.
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. This usually happens deep out in the ocean. The earth movement causes a displacement of water in the form of a large ripple which begins to move inland at tremendous speed.
There is no dramatic increase in height of the wave, but as it moves toward the coast, it builds up to a higher and higher height as the ocean becomes shallower and shallower till when it makes land fall, the wave may be dozens of feet high.
<span>These difficulties eventually resulted in the development of a transcontinental railroad. All the inventions and developments in the world are meant to make people's lives easier and comfortable, and this event is not an exception. In order to blur terrotorial boundaries the First Transcontinental Railroad was introduced to the US. It connected the eastern nad western parts of America.</span>
It help us see with out candles consally burnig and people burned them self a lot less
Explanation:
Known as the Cradle of Civilization, the Fertile Crescent is regarded as the birthplace of agriculture, urbanization, writing, trade, science, history and organized religion and was first populated c. 10,000 BCE when agriculture and the domestication of animals began in the region. By 9,000 BCE the cultivation of wild grains and cereals was wide-spread and, by 5000 BCE, irrigation of agricultural crops was fully developed. By 4500 BCE the cultivation of wool-bearing sheep was practiced widely.
The geography and climate of the region were conducive to agriculture and hunter-gatherer societies shifted to sedentary communities in the area as they were able to support themselves from the land. The climate was semi-arid but the humidity, and proximity of the Tigris and Euphrates Rivers (and, further south, the Nile), encouraged the cultivation of crops. Rural communities developed along with technological advances in agriculture and, once these were established, domestication of animals followed.
