Mutations cause changes in the genetic code that lead to genetic variation and the potential to develop disease. Gene mutations can be generally categorized into two types: point mutations and base-pair insertions or deletions. Point mutations are the most common type of gene mutation.
The simple answer is that the skin drinks during the day and eats at night. The more complex answer addresses the understanding of how various systems in the skin work, particularly the defensive barrier and renewal process. One of the main causes of rapid aging of the skin is exposure to sunlight.
Difference Between GMT and BST. Because the Earth is elliptical and goes around the sun on its orbit, a huge time difference exists among the different countries located in its different parts. Its inhabitants created time zones which are based on the time when the mean sun passes through the Greenwich Observatory in London.