Hello there,
The correct answer is:
C. Hypothesis
Hope this answer has helped you.
I would help but I can barely see the page
Sugar comes from either sugar cane or sugar beet<span> with the climate of a geographical region being the prime influence on which is grown. In both cases, the juice is extracted from the </span>sugar beet<span> or cane and impurities are removed. It is then crystallised into white sugar, which is 99.95% sucrose.</span>
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The question is incomplete. Th ecomplete question is as following:
All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator."
Answer: D) HCl.
Explanation:
- The epidermis, the outer layer of the skin provides waterproofing and serves as a barrier to infection and other laers also sustain any type of injury.
- Tears wash out foreign bodies which enter the eye. In addition, tears contain a substance called lysozyme which has an antibacterial function and works to prevent microbial invasion and infection.
- Saliva protects against infection, especially via the innate immune system. This mechanism is an important first-line protection against bacterial and viral infection
- The mucociliar escalator is within the conducting airways and is composed of mucus and cilia that transfer the mucus up and out of the lungs where it can be removed by coughing or swallowing,
Whereas HCL helps in the digestion process.
Hence, the correct option is D.
