Atypical double bond a. is stronger and shorter than a single bond b. consists of one σ bond and one π bond c. imparts rigidity to a molecule d. consists of two shared electrons pairs e. all of the above answers are correct.

All of the above answers are correct.

Explanation:

Double bonds are stronger that single bonds because they have both sigma and pi bonds whereas single bonds contain only sigma bond. They also involve the sharing of electron pairs and heavily imparts rigidity to a molecule.

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.