All of the following are nonspecific defense responses made by the human body except? b. mucus produced in the nasal and oral passages to trap pathogens c. wax produced in the ear to trap pathogens d. tcells target specific pathogens

Mucus in our noses and respiratory tracts trap microbes and pathogens from entering our body. Wax also trap pathogens and other foreign particles from entering our ears. Non-specific defenses are surface coverage defenses. T-cells target specific pathogens, which is a type of specific defense acted upon by our immune system.

9x² - 16 = (3x - 4) (3x + 4)
A      C

The value of ac together is 16(9x²) or 144x²

The value of B is zero, since there is no B (b is x, (note not x², but only 1 x))

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