1 Habitat fragmentation: Much of the remaining terrestrial wildlife habitat in the U.S. has been cut up into fragments by roads and development. 2  Aquatic speciesâ habitat has been fragmented by dams and water diversions.
As for simple antibiotics, they too kill bacteria in the beginning. But in the long run theyâre even worse, because the p.acnes bacteria is becoming resistant to them. The most common antibiotics used by acne patients over the last 30 years are erythromycin, tetracycline, doxycycline, and minocycline. Like any antibiotic they are specially targeted to kill bacteria and originally they killed p.acnes wellâ¦.
So, acne can be an infection of the middle layer of the skin, the dermis, caused by several strains of bacteria. 8. The dermis since it is the middle layer of the skin is very hard to access with products that can kill p. acnes, even though p. acnes is normally fairly easy to kill with over-the-counter products. 9.