Many masterâs degree programs in medicine allow for specializations in a more specific area, such as immunology, speech pathology or health administration. Those who complete a Master in Medicine will be ready to either obtain a career in the health industry or pursue an even higher degree.
Direct drivers of deforestation in Amazon countries Cattle ranching Cattle ranching is the leading cause of deforestation in the Amazon rainforest. In Brazil, this has been the case since at least the 1970s: government figures attributed 38 percent of deforestation from 1966-1975 to large-scale cattle ranching.
Large rainforests (and their humidity) contribute to the formation of rain clouds, and generate as much as 75 percent of their own rain. By some estimates, the Amazon rainforest is responsible for creating as much as 50 percent of its own precipitation. CANOPY STRUCTURE. Rainforests are characterized by a vegetative structure consisting of several vertical layers including the overstory, canopy, understory, shrub layer, and ground level.