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.
4) business can tale advantage of new forms of democracy to make products cheaply
Answer:
The jurisdiction or organization with primary responsibility for the incident designates the Incident Commander and the process for transferring command. Transfer of command may occur during the course of an incident.
I Hope That Is Right.....
When reading a graduated cylinder, a proper way to do it is to read at the level of the lower or upper meniscus. It is the curve formed at the upper part of a particular liquid that is close the surface of its container. This is caused by the surface tension. It can be in a concave or convex form depending on the characteristics of the liquid. It is important especially in performing laboratory experiments as it indicates the true level of the liquid in the container. When reading from apparatus, the lower meniscus or the upper meniscus is taken as the correct reading otherwise you would record a wrong data.
Answer: primary
Explanation:
The term 'primary' is used with these groups because they are the primary source of relationships and socialization.
Family is as social primary group that we acquire our beliefs, norms and values. A person's family help them gain a better understanding of their identity as well as provide individuals with a sense of belonging..it is also a primary source of relationships and socialization. According to Charles horton, it is a small social group whose members share personal and lasting relationships and friendships. In every society, that family is the most important primary groups
