Which of the following statements is true? a Biotic factors are nonliving components of an ecosystem.
b. Abiotic factors are living components of an ecosystem.
C. The available space in an ecosystem is an abiotic limiting factor.
d. The available water supply in an ecosystem is a biotic limiting factor.

The following statement that’s true is A

Ok and idk andssddd

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.