Answer:
B cells are activated when their B cell receptor (BCR) binds to either soluble or membrane bound antigen. This activates the BCR to form microclusters and trigger downstream signalling cascades.
Explanation:
The
planet would be
because it's way no where close to the
, it's like approximately
away from the
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I think it is D. This is off of personal belief. A does not make sense. B also wouldn't make sense. C can be it and D also. The one I think is more reasonable would be D.
In ecology, a community is a group or association of populations of two or more different species occupying the same geographical area at the same time, also known as a biocoenosis. The term community has a variety of uses