I would think 15, though I am not quite sure
Answer: are highly specific only work against certain antigens
are part of the body's adaptive immunity
Antibody, also called as immunoglobulin, are proteins which are produced by the immune system of the organism against the action of the foreign substance, also called as antigen. Antibodies recognizes specific antigens, removes them from the body and provides the body immunity. Antibodies are specifically produced by the specialized white blood cells called as B lymphocytes.
A chemical reaction is something that cant be changed for example: burning wood is a chemical reaction because when you burn wood you cant turn it back to regular wood.
Hopes this helps ;) <span />
Answer: Option C.
Tundra
Explanation:
Tundra is a biome that has low Precipitation. Precipitation is a form of water that fall from the atmosphere to the Earth surface. Which could be inform of snow, sleet e.t.c.
Tundra is the coldest of all types of biomes. It has low temperature, little precipitation,low nutrients. It is located near the north Pole of the Earth. It is characterized by permafrost, permanent frozen layer on its surface.
<span>Follicle-stimulating hormone</span>
