1. Directive 93/42/EEC on medical devices 1.1 Definition of medical devices a) devices - accessory The definition of the term medical device together with the definition of accessory is determinant for the delimitation of the field of application of Directive 93/42/EEC. A slight difference exists
Answers. It was Charles Darwin who highlighted the reproductive advantages of environmentally adaptive traits. One of the most important naturalists, he studied evolution and is the one who devised the theory that we and monkeys have the same ancestor.
From one generation to the next, the struggle for resources (what Darwin called the âstruggle for existenceâ) will favor individuals with some variations over others and thereby change the frequency of traits within the population. This process is natural selection. The traits that confer an advantage to those individuals who leave more offspring are called adaptations. In order for natural selection to operate on a trait, the trait must possess heritable variation and must confer an advantage in the competition for resources.