9 · en
Short, simple sentences with “nitrogen”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
The Earth is a celestial body that orbits around the Sun and has an atmosphere primarily composed of nitrogen and oxygen.
There are high emissions of sulphur dioxide and nitrogen oxide from human activities.
Urea is found in urine, blood and lymph and is the main form of protein nitrogen elimination.
Amino acids are the chemical units made up of nitrogen, carbon and oxygen, which form proteins.
Photochemical smog is not so common, and is produced by the interaction of sunlight with nitrogen oxides.
Huge machines will process the lunar rocks to separate the helium-3 from hydrogen, oxygen, carbon, nitrogen and some water molecules.
-We know that the yellow in diamonds is caused by a small nitrogen content and the blue by boron and hydrogen," says Kim, "but the pink is a mystery.
Acid rain is produced in the atmosphere. There, oil and coal produce nitrogen oxides. Coal smoke from power plants also releases high amounts of sulphur.
A recent measurement by the Mexican Department of Ecology showed a shocking figure: 150,000 tons of toxic substances per day are released into the atmosphere. Sulphur and nitrogen oxides, hydrocarbons, lead particles, manganese, nickel, copper, zinc and coal. Such a menu is part of the industries and the thousands of cars that overflow Mexico City.
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