Question

Which of the following statements is true? Choose one:

Answer 1

Answer:

C. Varieties of an element that differ only in the number of neutrons are called isotopes.

Explanation:

The Earth is approximately $4.543\times 10^{9}\ years$ 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.