At one time, people believed that life spontaneously arose regularly from non-living things. For
example, many people believed that spoiled meat produced living maggots. Why was spontaneous
generation considered to be an adequate explanation back then, but is no longer accepted as a valid
theory today?

Explanation:

rawr

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

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.