List the three types of plate boundaries and describe the relative motion at each of them

Divergent plate- The motion of the boundary is outward making new crust beneath the earth Convergent - going inward the denser crust goes under the less dense crust which pulling the crust inside the earth melting it down Transform- is just slide by each other nothing is going into the earth or spreading out making new crust is just slide the plate boundaries

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.