Erosion, weathering, mechanical changes, chemical changes.
Really, any interaction can change the composition of a rock whether it be done by man or through nature.
The answer is to your question is c
Density is defined as [mass] / [volume] .
The only choice listed with those physical dimensions is 'd' .
The overall arrangements of the atoms produce crystals
Complex reaction time involves selecting a specific and correct response from several choices when presented with several different stimuli.
Answer: A
