If the earth's axis had no tilt, the change in seasons in the northern and southern hemispheres would not occur. It would basically be the same climate in whichever region on the planet you lived all year long. Warm at the equator and cooler the further away you got from it.
Considering the Earth's tilt varies between 23.44-23.5 nothing noticeable would happen. Perhaps a few extra seconds on each season however nothing we would be able to perceive.
To prove that organic compounds could have been generated by the conditions of primeval earth
Saturn (and the other gas giants) don't really HAVE a "surface" on which you could stand on, as on Earth.
Mount Pinatubo changed the earth by destroyong many villages on the island of luzan.
Components of the earth that changed the least over time include the earth's crust and mantle and the structure of the earth's interior. Other structures that have changed very little include the components of the atmosphere.
changed the earth's crust
The cast of This Changed Earth - 2011 includes: Alexander Boulanger as Stalker
Stanley Miller, along with Harold Urey, recreated the conditions of early Earth inside a laboratory apparatus in 1953. They aimed to demonstrate how life could have originated from simple molecules in a primitive Earth environment.
well it changed the earth to the earth we have today
The fundamental Earth processes such as plate tectonics, erosion, and the water cycle have remained constant over geological time scales. These processes have shaped the planet's surface and environment, influencing climate, landscapes, and the distribution of life. While the rates and intensities of these processes may vary, the mechanisms themselves have largely stayed the same.
Miller and Urey
The temperature of the earth has changed because of the atoms in the air has become polluted with poo fluids. Aspects of this shows that the earth is decresing in temperature according to the dogs and cats.