Answer:
C. Varieties of an element that differ only in the number of neutrons are called isotopes.
Explanation:
The Earth is approximately 
old. The solar system formed from giant gas clouds which was a part of the solar nebula.
The surface of soil which demarcates two soils of different geological ages is called a unconformity.
Palesol is the soil that lies between sediments or volcanic deposits. If the paleosol is older they have lithified rock.
Hence, option C is true.
Answer:
Research findings suggest she will be somewhat impulsive and conflict-prone
Explanation:
Emotionally reactive and impulsive have a borderline personality disorder. This is the personality in which people struggle to manage their behavior and life. From deciding the fights, impulsive nature can cause you and around yourself. This impulsive behavior cause financial problem for a person as well as the relationship issues occur with the person. There is much treatment that can control the impulsive of a person such as psychotherapy and medication etc.
Answer:
b) Southern states were able to increase their output and profits off of cotton
Explanation:
