glaciers melting is an example
Meteorite craters.
The Earths plates are constantly moving, and changing causing different landmasses and occurrences to happen such as earthquakes. Our earth is always changing in size. Straight, short Answer: It is because of the movement of the Earths plates constantly changing and shifting.
earths tempertures
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.
Their evidence comes from rocks at earths surface.
Yes, oxidation is changing materials and radiactive materials are changing.
i dont know what is it
mostly climate
Seasons
It is not so much the climate, but it is the tectonic plates movement, and fossils of extincted animals on different continents that support this theory. Also, fossils support the theory of evolution that was proven by Charles Darwin.
Relationship to the sun
Seasons And Climate