Which event occurred during the Cenozoic era? Cyanobacteria filled the water and air with oxygen.

Pangaea, the super continent, was formed.

Pangaea began to break apart into many continents separated by shallow seas.

Early humans began to make tools, harvest plants, and make cave paintings.

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.

Bruh i don’t know the answer tbh but you can google it