PH, acids, and bases
One role of the human skin is to help protect the body against bacteria. The optimal pH of human skin is 5.5.
What is true about the pH of human skin?
Choose 1
A
It is basic.
It is acidic.
It is neutral.
0
It is both basic and acidic.

B. It is acidic

Explanation:

Acid refers to the presence of hydrogen ion. If the concentration of hydrogen increases, the solution will be more acidic or if the concentration of hydrogen ions decrease, the solution will be less acidic. There are two methods for finding pH of a solution i. e. pH paper and litmus paper. If the blue litmus turns red, the solution is acidic. The pH ranges from 1 to 6 denotes acid. pH of skin is 5.5 which comes in the above range so it is acidic in nature.

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.