What explains why certain dead organisms in the past were not fossilized?

They may not have skeletons, their body/bones were destroyed underground, the earth around them wasn't the correct type of rock, etc.

Explanation:

Only a small percentage of organisms are ever fossilized, and can only be fossilized under specific circumstances.

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).