Which planet is compared in size to Earth correctly?

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.

. the sierra madre fault zone of southern california

. the san andreas fault california

what? are the statements?

i think the answer is a.keratin is the pigment responsible for skin color.