Answer:
it can be a disadvantage to population because it produces many offsprings which can lead to high increase in population.
Answer: Earth's seasons are caused by it's tilt on it's axis :)
Explanation:
B cell activation occurs in the secondary lymphoid organs including the spleen and lymph nodes. After B cells mature in the bone marrow, they migrate through the blood to s<span>econdary lymphoid organs</span><span>, which receive a constant supply of antigen through circulating </span>lymph.
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Answer:
13 inches
Explanation:
Fleas can jump double the amount of their own body.
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