Sedimentary rocks formed from broken fragments of other rocks are

Sedimentary rocks formed from broken fragments of other rocks are clastic rocks. They are made up of pieces (clasts) of pre-existing rocks. Weather processes broke down the rocks into pebble, sand and clay particles. Clastic sediments or sedimentary rocks are classified based on grain size, clast and cementing material.

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Essential for a scientist to do for credibility

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.