Which of the following pairs is mismatched?
a. innate immunity: highly specialized defenses.
b. secondary immune response: immunological memory.
c. hematopoiesis: bone marrow.
d. phagocytosis: uptake and killing of microbes.
e. lymphocyte recirculation: continuous transport between blood and lymph.

innate immunity : highly specialized defenses.

Explanation:

Immunity against infectious diseases are 2 types - innate immunity and acquired immunity. Innate immunity is the type of defense mechanism which is present at birth. This type of immunity does not depend upon the immunization. This type of immunity is not highly specific as acquired immunity. Innate immunity has no memory and response in first-rate towards the antigens. The phagocytic cells, dendritic cells are some cells of the innate immune system. This changes throughout the lifetime. Different species have different innate immunity. It means different species show different susceptibility to different diseases. e.g Rats are unsusceptible to Diphtheria while men, guinea pigs are highly susceptible to Diptheria.

answer; hypnagogic sensations)

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.