B is the answer.
The temperature increases and the population of the rotational and the vibrational states changes.
Answer:
Social structure
Explanation:
Social structure is the stable arrangement of institutions whereby human beings in a society interact and live together.
Answer:Students do not learn to work with people of differing abilities.
Explanation:
researchers found that tracking caused a decrease in student achievement for low-track students and increased achievement for students placed in the higher track.
I'd go with d. applied research. :-)
