8. If cold viruses invade your body, your
body's immune system may destroy most
but not all of these viruses. How does yoj
body's immune system affect the evolutio
of the cold viruses?

the answer to your question is tooth decay.

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.