Not only the weather changes from day to day, changes and climate, but they are much slower. The study of climate and weather of the past eras helps to better understand our current weather. Long-term climate changes occur over hundreds of thousands and millions of years. In rocks and in the history of life on Earth, we find evidence that the climate on our planet was not always so, as it is today. Studying the remains of plants and animals preserved in rocks, scientists draw conclusions about the development of the climate. Yes, and these species often consist of ancient fluvial and marine sediments, sand dunes or retain traces of former glaciers.
As a huge continental plates of our planet drifting, they are significant climatic changes. The area where today is mined coal were once located near the equator, because the coal was formed from the remnants of tropical wetland forests. Areas previously or still covered with ice, had to be near the poles.
Today indicates that we are still living in the ice age. Glacial periods last on Earth many millions of years, during which the ice armour repeatedly melting and coming back. Cooling alternated with warming. However, the ice ages were fairly rare phenomena in the Earth's history. For the most part, the climate remained warm. Sea currents carried heat from the tropics to the poles. Today, the Arctic ocean is surrounded by the continental masses, and the South pole is located on the Antarctic continent.
Paleontology, the study of fossils of flora and fauna,
learn about the natural and climatic conditions of bygone eras,
for example the Cretaceous period, when the Earth was inhabited by dinosaurs.
On the snowy plains of Europe and Asia during the ice age lived
giant animals - mammoths that died out long ago.