How An Epidemic Evolves

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canopy = the uppermost branches of the trees in a forest, forming a more or less continuous layer of foliage alter = to change disguise = something you put on so no one recognizes you jaundice = a serious disease in which substances not usually in the blood cause your skin and the white part of your eyes to turn yellow insect-borne diseases = illnesses from insect (bug) bites stagnant water = water that is not flowing or moving scrub = vegetation consisting mainly of brushwood(=small branches that have broken off from trees and bushes)

EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.