The adaptive immune response is the second line of defense against non-self pathogens. Adaptive immunity, also known as acquired immunity or specific immunity, is found only in vertebrates.
<h3>What is second line of defense?</h3>
Nonspecific resistance, which destroys invaders without targeting specific individuals, is the second line of defense: phagocytic cells ingest and destroy all microbes that enter body tissues.
The adaptive immune response is the body's second line of defense against non-self pathogens. Adaptive immunity, also known as acquired immunity or specific immunity, is found only in vertebrates.
Thus, adaptive immune system is a natural, nonspecific immune response, but it is part of the body's second line of defense.
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Answer:
Members of this population can mate with one another
Explanation:
Alligators and crocodiles are two different species. Also, there's no way these alligators in Florida can make it across the ocean to China.
It is poisonous on it's back and is a big species of frogs but not any bigger than a curled up dog.
2nd choice is the correct one
Answer:
B. shot put.
Explanation:
The evaluation of fitness could be figured out with the health related level, parts like flexibility, the strength of muscular, capability of aerobic exercise, etc. In order to remains fit for a daily life maintains the stress level so that the work could be done in easy manner without taking any stress or fatigue
For evaluating the fitness, the push-ups, running, and the standing long jump is involved but the shot put is not involved
Therefore the option B is correct
