ANTIBIOTIC SUSCEPTIBILITY TESTING. Bacteria demonstrate two kinds of resistance to antibiotics, namely intrinsic resistance and acquired resistance. Intrinsic resistance means that the species was resistant to an antibiotic even before its introduction.
Radiation is naturally present in our environment, as it has been since before the birth of this planet. In addition, radiation can be produced artificially, as in medical x-rays and microwaves for cooking. Nonetheless, most people are not aware of all the natural and man-made sources of radiation in our environment.
exists and is an alternate of . The radio wave from the space are mostly released by stars and other matters in the sky and most likely when they are emitting energy . For example , although hydrogen emits no light , it does emit energy at a specific wavelength in the electromagnetic spectrum . Wyatt Williamson.