Answer:
Low pH
Explanation:
The skin has sebaceous glands that secrete sebum. Sebum makes a protective layer over the surface of the skin and imparts it an acidic pH due to the presence of fatty acids in it.
Mostly, the pH level of skin is maintained within the range of 3-5 (acidic) which in turn serves as one of the barriers against pathogen provided by skin. Likewise, sweat glands of skin secrete sweat which also imparts the acidic pH to the skin to prevent any infection.
Answer is A all living things need to go through the photosynthesis cycle and need oxygen to sustain life
Centrioles are organelles that are found only in animal cells and they produce D) flagellum and centrosomes.
Centrosomes help organize the microtubules present in the animal cell during cell division and also regulate the cell cycle.
Furthermore, the flagellum produced by centrioles in sperm cells help the cell move towards the egg and cause fertilization.
