Microevolution is microevolution is speciation dramatic changes that take place over long periods of time changes in the gene pool of a population from one generation to the next evolution on a molecular level

the statement is true

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.