Select all of the answers that apply.
billions of years ago, earth was a very hot place due to
meteorite bombardment
high levels of carbon dioxide and water vapor
earth's strong gravitational pull
cyanobacteria photosynthesis

meteorite bombardment. Hope this helps.

the answer would be   10%

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.