Like objects attract each other
A) Helper T cells divide and activate cytotoxic T cells, which destroy the infected cells.
Answer:
B
Explanation:
A formal tone due to the fact that a formal tone helps establish the writer's respect for the audience and suggests that the writer is serious about his or her topic. It is the kind of tone that educated people use when communicating with other educated people. Most academic writing uses a formal tone.
The interaction between termite and protozoan is called mutualism. The correct answer is B, mutualism.
