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What metals were used 100 years ago?
The most common metal used 100 years ago was aluminum alloy. Aluminum began to be prevalent approximately 170 years ago.
How did oxygen get in your atmosphere?
Oxygen was released from Precambrian rocks. cynobacteria were the first organisms to produce oxygen 2.5-3 billion years ago
What element transformed carbon dioxide atmosphere a billion years ago to what you breathe?
Oxygen is the element that transformed Carbon Dioxide atmosphere a billion years ago to what you breathe.
More than 2 billion years ago blank began producing oxygen?
More than 2 billion years ago, trees and plants began producing oxygen. They do this by feeding off carbon dioxide released by living beings.
How long does coal take to be formed?
100-300+ Million Years Ago
How much oxygen was there 2.2 billion years ago?
There was so much oxygen 2.2 billion years ago such that it cannot be computed. In the present day, most of the oxygen has been reduced to metal oxides.
How much water is there on earth today compared to 100 years ago?
there is still the same amount of water on earth as their was 100 years ago or in fact 1 million years ago. The fact is that today less water is in ice form then there was 100 years ago.
Is century a long time ago?
100 years ago! cent meaning 100 Does that help? It is comparitive do you think 100 years ago is a long time ago? If you consider that a normal human life lasts about 70 years then 100 years is just under half as much again - its a long time
What was Launceston like 100 years ago?
it was smaller and much cleaner
Is the current oxygen content of the atmosphere lower or higher or about the same as is was millions of years ago?
About the same. About a half billion years ago it was significantly higher, and more than a billion years ago it was lower, much lower. Before 1.5 or 2 billion years ago there was no free oxygen in the atmosphere, before 3 billion years ago there wasn't any.
What was the price of gas 100 years ago?
There was no gas for automobiles 100 years ago
How much was 260 pounds equal to 100 years ago?
260 pounds
What was made 100 years ago?
teddy bears,chess,much more
How much did gas cost 100 years ago?
$0.4 per gallon
What was life like 100 years ago?
i think life 100 years ago was more diffuclt because you had to do more work and there was not enough time to play. one other reason might be that there was no xboxs or other video gqmes back there 100 years ago.
What are facts about life 100 years ago?
There are many places to find facts about life 100 years ago. You could find facts about life 100 years ago in a library.
Was there copying machines 100 years ago?
I think there wasn't copying machine 100 years ago
