Spectroscopy because it talks about the study of spectrum of light.
Answer:
C Fossil fuels will run out soon
Answer: Handwashing. It is estimated that washing hands with soap and water could reduce diarrheal disease-associated deaths by up to 50% 1. Researchers in London estimate that if everyone routinely washed their hands, a million deaths a year could be prevented 2.
Explanation:
Answer:
In neutralization reaction water and a salt is produced.
