Answer:
It has gotten worse.
Explanation:
In the past 30 years, air quality in the United States has declined almost exponentially. Pollution is the main reason for the declination of air quality in the United States, but there are different kinds of pollution, including light pollution, noise pollution, air pollution, water pollution, etc. Air pollution can be caused by primary or secondary pollutants. Primary pollutants include carbon, nitrogen, and sulfur oxides as well as just general particles in the air. Secondary pollutants are formed when pollutants are exposed to sunlight via chemical reactions.
B. 1748
They remained frozen in time until an engineer found them
Answer:
Heat is produced.
Explanation:
Law of conversation of energy and mass these can't be created or destroyed, but can be converted to another form. The fuel/chemical energy is being converted into heat.
Do you have snap because I want new friends
Answer: Fatty acids. . Monosaccharides. . Nucleotides. . Amino acids. . What type of molecule is represented by the model below?. . -A molecule made up of four carbon rings with other atoms bonded to those rings-. . A.Fat. . B.Carbohydrate. . C.Steroid. . . D.Protein
Explanation:
