The climate was slightly cooler (about 1 degree Celsius) a century ago. Climate change is usually a very slow process, occurring over time scales of many centuries. Human induced climate change is much faster, with dramatic changes occurring on time scales of mere decades.
I feel pretty confident in stating here that there was no climate to gauge if one takes into account that there was no 100 billion years ago, as it would've been before the big bang (13-15 billion yrs ago) which we now consider is when time began.
The total amount of water on Earth has remained relatively constant over the past 100 years. However, changes in the distribution of water due to activities like urbanization and climate change may have altered the availability of freshwater in some regions.
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are you serious? Life started billions of years ago!!! dinosaurs were on the earth millions ago, the aboriginals lived in Australia for about 60 000 years ago and the English and dutch 'discovered' Australia just over 200 years ago. Life appeared well over 100 years ago.
Well, 50 years ago 14% of the earth was covered in rainforests - all around the equator. But 100 years ago it was not destroyed at all - it probably just completely covered the whole equator!
The layers in the soil can give a fingerprint of the climate.
Earth has existed a little more than 4.5 billion years. 160,000 million years ago was the Jurassic period. The climate was warm and humid, leading to lush and green foliage. It was an ecologically diverse time, and mammals were evolving rapidly. There were dinosaurs.
In 1915, there weren't necessarily good maps of Antarctica, and none of them showed climate, only landmass.
1000 years
200-250 million years ago it broke away (like everything else) as the earth expanded..
There was no gas for automobiles 100 years ago
The most recent information we can receive about the star would be from about 100 years ago, as it takes light around 100 years to travel a distance of 100 light years from the star to reach us on Earth.