Answer:B cell sub-type that are formed within germinal centers following primary infection. Memory B cells can survive for decades and repeatedly generate an accelerated and robust antibody-mediated immune response in the case of re-infection (also known as a secondary immune response).
Explanation:
The correct answer is B. <span>Both protists and fungi are eukaryotic</span>
The answer is the option "c"
The eruptions are caused by an accumulation of gases that press under a volcano.
The molten rock continues to generate upward pressure but can not advanced; this causes that its force increases with the passage of time, since it continues accumulating hot gases trying to come to the surface.
Finally, the surface yields and a volcanic eruption occurs.
<u>Answer:</u>
<em>D. It is the female part of the plant and contains the ovules, which house the main egg.
</em>
<u>Explanation:</u>
Pistil is the part of female reproductive system of the plants. Stigma, style and ovary together constitute a pistil. Ovary is the swollen base of the pistil that contains eggs or ovules to which the nuclei of the pollen grain fuse and form seed.
Stigma is the outer most part that captures the pollen grains and transfers it to the ovary through the style. Style is the elongated part that connects the stigma and the ovary.
the earths crust because it is the first layer of the earth
