Nitrogen is important because it sees a significant amount of use in the agricultural sector: it is an additive in many commercial fertilizers and is sprayed on crop fields to reduce the risk of insect infestation and crop failure. Nitrogen is produced using natural gas and air, which are readily available in the environment. The availability of its raw materials makes nitrogen fertilizers and pesticides relatively easy to produce.
Although nitrogen is derived from natural sources in the environment, most living organisms cannot use nitrogen in its pure form. When nitrogen is cultivated and treated, however, it becomes one of the most widespread ingredients in agricultural operations around the world.Learn More
The earth's magnetic field causes a compass to point north, as compasses are powered by magnets. The magnets inside compasses are drawn to the magnetic North Pole, which is about 1,000 miles south of the actual North Pole. Therefore, even though a compass always points north, it does not always point toward the true north.Full Answer >
The Earth is the only planet known to support life. Although larger than the other inner planets, Earth is much smaller than the gas giants found in the outer solar system. Earth is a terrestrial planet with liquid water covering roughly 70 percent of its solid surface.Full Answer >
Oceanographers measure the salinity of ocean water by using a hydrometer, a hydrometer set, a chemical test kit or a salinometer. A hydrometer is a quick test tool used in aquariums, and it works by reading the water density. Higher dissolved salts result in higher density.Full Answer >
Air pressure is caused by the weight of the air pressing down on the Earth, the ocean and the air below. Air pressure is also known as atmospheric pressure and barometric pressure.Full Answer >