summarise two types of information that geologists can gain by studying rocks

Geological History: By studying rocks, geologists can gain valuable information about the Earth's history. This includes understanding the sequence of events that have occurred over millions of years, such as the formation of mountains, the occurrence of volcanic eruptions, or the shifting of tectonic plates. Rocks can also provide clues about past climates and environmental conditions. For example, the presence of certain minerals can indicate that an area was once underwater.

Fossil Record: Rocks often contain fossils, which are the preserved remains or traces of animals, plants, and other organisms from the remote past. By studying these fossils, geologists can learn about the evolution of life on Earth. This includes understanding when different species existed, how they lived, and why they went extinct. Fossils can also provide information about ancient ecosystems and the changes they have undergone over time.