What is the function of the pneumatocyst in kelp? A. They float the blades and protect them from grazing species. B. They float the blades for better exposure to sunlight. C. They provide storage for excess nutrients. D. They contain gas that is released in case the species is attacked.

the correct answer is b

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.