Infected cells can release chemicals that travel through the bloodstream to alert

the brain. the brain then sends signals along [veins; muscles; nerve cells;

bones] to increase the temperature of the body. white blood cells are brought into

the infected area using the [digestive system; respiratory system; circulatory

system; endocrine system]. based on the graph, the infected area most likely

stops releasing chemicals to alert the brain of an infection [2 hours; 3 hours;

5 hours; 7 hours] after the infection starts.

veins; digestive system; 2 hours

muscles, respiratory system; 4 hours

nerve cells; circulatory system; 5 hours

nerve cells; endocrine system; 7 hours

give me abc and i will get it for u.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.