Answer:
B the mantle becoming more massive and dense due to gravity
Answer:
C erosion
Explanation:
its taking away part of the beach, and it happens slowly over time
Explanation:
Pangea
Pangea is the belief that all continents were all connected at one time
During DNA replication, the two strands separate as the hydrogen bonds connecting the parent strands are broken by an enzyme called helicase. In the DNA molecule (double strand) complementary bases are joined by hydrogen bonds; that is; Adenine paired to thyamine and guanine to cytosine; during replication the enzyme helicase separates the double helix by breaking the hydrogen bonds between the complementary bases.