For the past twenty million years the climate changed in response to orbital variations known as "Milankovitch Cycles." This entailed a series of ice ages. These ice ages may have been precipitated by what is known as the "Azolla Event," which began about 15 million years after the end of the Cretaceous.
Azolla is a freshwater fern which sank into the icy depths of the Arctic ocean. Over a fairly short period of a few hundred thousand years billions of tons of atmospheric carbon was sequestered onto the sea floor by the growth and death of this fern. The climate cooled, and thus began the last series of ice ages.
i dont know what is it
earths tempertures
Fossils tell how Earth's landforms, climate, and ecosystems have changed over time. They provide valuable clues about the past by preserving evidence of ancient organisms and environments.
Earth's climate has been changing over the past century due to human activities such as burning fossil fuels and deforestation, leading to an increase in greenhouse gas emissions. This has resulted in global warming, causing rising temperatures, melting ice caps, changing precipitation patterns, and more frequent extreme weather events. Scientists warn that continued climate change could have devastating impacts on ecosystems, agriculture, sea levels, and human society.
Changes in climate
i dont know what is it
There are fossils of tropical rainforest plants in areas that are now dry desert. Either the land has moved (which has also happened), or the climate changed. This is one of the most obvious bits of evidence for past climate change, but there are numerous others.
earths tempertures
Fossils tell how Earth's landforms, climate, and ecosystems have changed over time. They provide valuable clues about the past by preserving evidence of ancient organisms and environments.
Ice cores contain valuable information such as air bubbles and isotopic composition that can be used to reconstruct past climate conditions like temperature and atmospheric composition. By analyzing the layers of ice cores, scientists can track changes in these parameters over time and gain insights into how Earth's climate has evolved.
There are fossils of tropical rainforest plants in areas that are now dry desert. Either the land has moved (which has also happened), or the climate changed. This is one of the most obvious bits of evidence for past climate change, but there are numerous others.
mostly climate
The past tense of change is changed.
The past participle is changed.
photosynthesis
Seasons And Climate
Relationship to the sun