Answer:
When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.
Explanation:
Gram negative bacteria have significantly thicker walls than gram positive.
This thicker wall doesn't allow a stain to penetrate the bacteria, and are generally regarded as more dangerous.
Gram positive usually have a thinner cell membrane.