Most fo the hurricanes that affect the east coast of the United States originally form over the warm waters of the Atlantic Ocean in Summer (1). The warm waters of the Gulf Stream run along the east coast of the United States. This provides an environment which is conducive to the development of hurricanes. The basics of the formation of a hurricane are as follows. Winds start blowing in a circular motion. This causes hot, moist air to rise. Clouds are formed and the winds start blowing faster and faster. This forms a low-pressure zone. The surrounding high-pressure zones pull the hurricane towards them. As the hurricane moves, it either picks up speed or decreases its speed and intensity.
Answer: Gneiss
Explanation: Gneiss is a metamorphic rock formed from shale at very high temperature and pressure condition. They exhibit a preferred alignment or orientation of platy minerals called foliation. They are coarse grained and exhibit gneissose banding. They are formed from highest grade regional metamorphism with temperature between 450 - 600 degree celcius and pressure between 800 - 1000 mega pascal. They generally occur in cores of fold mountain belts where mountain ranges have been eroded.
A net population decline resulting from an "excess of deaths over births".
Option: A
<u>Explanation</u>:
Demographic transition is a shift from higher to lower level of fertility and mortality.Rapid development in industrialization and urbanization in 
century resulted into enormous population growth. But decline in early 
century covered many reasons like consequences of two calamitous wars, where Europe suffered large population declination due to battle death and civilian causalities in World War I and II. Hence the acceleration of population growth in 19th century but downfall in 20th is also considered as balance.
According to the Aymaran calendar it is the year of 5,528.
Explanation:
There are lot of calendars around the world, some being widely used, some less, some only locally, and some can be considered as abandoned from one reason or another. One type of calendar that is used locally is the Aymaran calendar. This calendar is practiced only in parts of Bolivia, southern Peru, and northern Chile.
The Aymaran calendar is actually one of the oldest that is still in use. While the majority of the world has just celebrated the year of 2,020 according to the Gregorian calendar, the Aymaran is way upfront of it. According to this ancient calendar it is the year of 5,528, meaning that this calendar started off in the year of 3,508 BC. Despite the backlash of the Catholic Church in order to ban this calendar and the celebrations related to it, the people still manage to stand strong and keep their traditions alive.
