When a virus invades a host the most common threat is
a. production of viral fluids in the bloodstream.
b. fermentation of acids in the digestive system.
c. destruction of cells by viral reproduction.
d. stimulation of muscle tone in the heart.

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

Monitor and apply fix up stratorgies

How does deforestation affect the water cycle? a. it increases the amount of runoff b.it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff