Ice blanketed much of North America, northern Europe, and northern Asia at one time. That is pretty good evidence of a dramatic change in climate.
There have been numerous ice ages, as revealed by rock strata and oxygen isotope ratios. Fossil evidence of rainforest organisms buried in what is now desert also reveal substantial changes in climate over geologic time.
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.
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.
The best evidence you have of past climate is written almanacs and weather reports. Almanacs have been kept for centuries and well document the climate.
really who was the genuis to ask this question it is Africa
Accurate evidence for the theory that Earth's climate has changed over geologic time includes data from ice cores, which reveal temperature fluctuations and atmospheric composition over hundreds of thousands of years. Sediment layers and fossil records indicate shifts in flora and fauna corresponding to past climate conditions. Additionally, isotopic analysis of marine sediments provides insights into historical ocean temperatures and ice volume changes. These lines of evidence collectively demonstrate the dynamic nature of Earth's climate throughout its history.
Fossils of tropical plants and animals found in high-latitude regions like the Arctic provide evidence of a warm humid climate during the beginning of the Cenozoic Era. The presence of coal deposits, which form in wet environments with abundant plant growth, also suggests a warm and humid climate during this time period. Additionally, sedimentary rocks containing evidence of high precipitation and weathering rates indicate a warm and humid climate in the past.
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.
Sedimentary rock provides evidence of the different changes in the earth's environments. Evidence is deposited in layers which have characteristics of wet, dry, hot or cold climates.
changes in the environment e.g. the place, temperature, climate.
The fossil evidence shows that the Earth's climate before had high levels of carbon dioxide. The plants that evolved consumed this carbon dioxide out of the air and formed oxygen, coal, limestone, and other fuels.
Buried surfaces can provide evidence of past environmental conditions, such as sedimentation rates, sea level changes, and climate variations. They can also contain fossils or artifacts that give insight into past ecosystems and human activities. Studying buried surfaces helps scientists understand the history of an area and how it has changed over time.
The Sahara has experienced significant changes over time due to shifts in climate, vegetation, and human activity. It has gone through periods of desertification and greening, with evidence of past lakes, rivers, and vegetation indicating a more hospitable environment in the past. Today, factors such as climate change, land degradation, and population growth continue to impact the Sahara's landscape.