A group of people who reside in an area
Their role is as a scavenger.
I would say that this would be 2. Breaks down existing landforms to create new ones
<span>what really led into that was most likely the evolution period, all of the reptiles were subdivided into noticeable stages
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The correct answer is (c) discover antigens in body fluids.
B lymphocytes act as antigen presenting cells that recognizes and displays the antigen to the white blood cells. These cells process the antigens that are present in body fluids. Professional antigen presenting cells includes B-lymphocytes, macrophages, dendritic cells, etc.