The opinions and prejudice of an author in writing.
I believe that those two elements greatly affect bias in history because we can never be 100% sure of everything that (may have) happened in history (especially farther in the past), so opinion can affect a historian's writings. Also, everyone is prone to some sort of prejudice, so this can also affect history.
The correct option is C.
The key process of rock cycle include the following: crystallization, erosion and sedimentation and metamorphism. During the erosion and sedimentation stage, the weathering process breaks down rock particles into smaller pieces. These smaller pieces are transported via erosion to other locations, where they form soils.
Answer: The new experiment produced about 10 times as much energy as the previous experiment. Scientists considered this increase to be a modest (average) achievement.
Obviously the sun, unless we manage to make speed of light spacecraft like in startrek.