Loss of hearing are caused by long-term exposure to noise. However, in everyday life, the average decibels lever is below 140 decibels, which has no negative effect on our hearing. Only jet engine at close range is the worst culprits at an ear.
A conversation at close range as well as a rock band at close range could contribute to hearing loss. However, long term exposure to jet engineer made people get used to noise and wouldn’t cause hearing loss as rock band does.
The danger zone of hearing loss are discussed, ranging from 30 decibels to 100 decibels. All this noise can damage the delicate hearing cells. As a result, a person with hearing loss can’t hear voice.
Loss of hearing are caused by exposure to noise over a long window of time. At 90 decibels level, people have risk of hearing loss begin. Lots of everyday life can damage your hearing, for examples, long term exposure to rock bands and jet engines.

The hurricanes, which are also refers to the typhoons or cyclones, are ranked according to their wind speed and ability to cause damage.
Comparing with the cyclone, typhoon typically begins as a tropical storm and is relatively faster in wind speed.
The majority of hurricanes last only a few days and that’s the main reason why they do not always kill people when they reach land.

Organic compounds include all living organisms, boil at lower temperatures, and bond easily with other elements. As for inorganic compounds, they are more common than organic compounds.
Because carbon bonds easily with other elements, there are more carbon compounds than non-carbon compounds. There are more than ten million carbon compounds, which is ten times the number of inorganic compounds.
A compound is made when two or more elements unite and there are two main branches of chemical compounds: organic and inorganic compounds. There are five differences between organic and inorganic compounds.

Global cooling has taken place on Earth in the past and the Little Ice Age lasted from around 1300 to 1800. Some scientists think changes in Earth’s orbit make the temperature drop, and a lack of sunspots might affect temperatures on Earth.
The temperatures in the Northern and Southern hemispheres decreased during the Little Ice Age. There was less rain in summer during this period, which resulted in a lack of food.
Global cooling will occur soon due to sunspots, which will further result in the average temperatures on Earth dropping. As a result, the ice pack in the Arctic Ocean will grow larger and move south.

The hardest mineral is determined by Mohs Scale of Hardness. Diamonds are close to glass in hardness, and Gypsum is known as the softest substance on Mohs.
Mohs Scale of Hardness is created to rate minerals. Hardness refers to a material’s ability to scratch other objects and different materials are received different rank on this scale.
Friedrich Mohs was the first person to realize how hard diamonds are. The professor tells the students to look in their textbooks so that they can learn about the hardness of them.

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