Here are some specific examples:
* Fossil fuels: Coal, oil, and natural gas are formed from the remains of ancient plants and animals.
* Limestone: This is made up of the calcium carbonate shells of marine organisms like corals, mollusks, and algae.
* Chalk: This is a type of limestone made primarily from the shells of microscopic marine organisms called coccolithophores.
* Diatomite: This is formed from the siliceous skeletons of diatoms, a type of single-celled algae.
It's important to note that biogenic rocks are formed through a process called biomineralization, where living organisms produce minerals that accumulate over time.
