The white blood cell is called NEUTROPHIL. Neutrophils play important roles in the immune system; they move around the body via the blood stream and when they sense signals that foreign bodies are present, they move to the site of the infection and destroy them. They are among the first set of immune cells that defend the body against infection.
D, is the answer. If you take antibiotics more than you're supposed to your immune system gets used to it and it no longer works.
Answer:
the force needed to accelerate the 1000kg car by 3m/s2 is 3000N .
