Central and Northern Andes and the Amazon River basin and drainage network Amazoniais the largest river basin in the world, and itsforeststretches from the Atlantic Ocean in the east to thetreeline of the Andes in the west. The forest widens from a 200-mile (320-km) front along the Atlant...
The third technique is used in badly contaminated wounds to allow drainage and thus avoid the entrapment of microorganisms. Military surgeons use this technique on wounds contaminated by shell fragments, pieces of clothing, and dirt. The 20th and 21st centuries witnessed several new surgical ...