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.
Answer:
Your answer should be C I believe
Physics is very common in our lives, and of course this also applies to the performance of a runner.
For example, he or she needs to understand the air resistance when running, they may need to find a way to reduce the most air resistance that is against them so that they can show their best performance.
Or another example is they may need to find out the friction acting on between their feet and the track, they may need to adjust their training in different textures of running tracks, as each acts a different amount of friction.
Answer:
Examples include:
1. A female employee not given certain rigorous projects which she is interested in. This leaves her wondering if her gender could be the cause of the exemption.
2. A Chinese employee who was exempted from a get together at his workplace (which is dominated with Africans) and he wonders if it was a result of his nationality.
Explanation:
Discrimination is the act of segregating or exhibiting prejudice on a particular set of people for reasons such as race, gender, age, or sex. Discrimination could be overt or subtle. Overt discrimination is frontal and more recognizable when compared to subtle discrimination which is more blurry and difficult to recognize.
For example, if a prospective employer expressly says that female employees are not needed for a role, it is quite easy to recognize this as a form of discrimination. This illustrates overt discrimination. But then subtle implicit discrimination are more difficult to recognize. They leave the victim wondering if the act was actually discriminatory and it is quite harder to lodge legal complaints about these types of discrimination. Examples are some of these stated above.
Answer:
A and C are correct! :)
Explanation:
A is correct because the poachers are not intentionally trying to increase the number of tuskless elephants, but they are accidentally doing so because elephants without tusks are less likely going to be killed by them.
C is correct because where the Rams with smaller rams are more likely to survive.
