Organisms commonly used to test the effectiveness of disinfectants include bacillus megaterium, mycrobacterium bovis, pseudomonas aeruginosa and staphylococcus aureus. why are these species often used and without performing any test how would you rank their susceptibility to disinfection?

b) the inside picture would look at a very high temperature in a very low ph

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101