Explain the roles that hot clay and vesicles may have played in the origin of life on earth and describe evidence that supports this hypothesis.

The hot clay and vesicles have played role in the origin of life on Earth. 

1) Many biologically important compounds in our body have been produced below the earth in abiotic environmental conditions.
2) The hot clay in the inner early earth was responsible for the formation of vesicles, which turned into cells.

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.