Explanation - Humans have exceeded the carrying capacity. Technology is one of the considerable factor for reducing the death or mortality rate of humans and increasing the birth rate.
Example - the medical instruments have advanced to such an extent that the patient is more likely to get cured soon unlike previous years. It has now become a major concern that the population might reach to the extent when our planet, earth will not be able to sustain us.
Botany is the study of plants. Meteorology is the study of meteors. Geology is the study of the Earth. Zoology is the study of animals. I hope that helps :)
The reason why I think these fossils are more common fossils than those of soft tissues or microorganisms one reason is that soft tissues decompose better than bone which gives more time for them to be buried.
