There are two oxygen atoms. The OH is in parentheses with the 2 after it to indicate that there are two OH molecules, each containing on atom of oxygen.
Answer:
Biology, study of living things and their vital processes. The field deals with all the physicochemical aspects of life. ... Modern principles of other fields—chemistry, medicine, and physics, for example—are integrated with those of biology in areas such as biochemistry, biomedicine, and biophysics.
Explanation:
The food in the dog's mouth was the cheese.
