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What are banded iron formations and what do they tell us about the evolution of Earth's atmosphere over geologic time?
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Earths early atmosphere was changed dramatically by the evolution of?
photosynthesis
Scientists can determine if oxygen existed in earths Archean atmosphere by?
The Archean atmosphere is believed to have been free of free oxygen. Banded iron formations did not occur till near the end of the Archean period.
How did earths atsmophere change during the precambrian time?
It changed from a reducing atmosphere containing no free oxygen to an atmosphere containing oxygen. The evolution of life on Earth "terraformed" the planet.
What is the particles outside earths atmosphere?
The particles outside the Earths atmosphere are called, meteoroids.
Which of earths layers is the coldest?
The crust is the coldest geologic layer.
Earths early atmosphere was changed dramatically by the evolution of?
photosynthesis
Which of Canada's parks is world renowned because of its rock formations which illustrate the massive geological evolution of the earths crust?
Quttinirpaaq National Park
Which of Canada's parks is world renowned because of its rock formations which illustrate the massive geological evolution of the earths crust '?
Gros Morne National Park
What was the importance of photosynthesis in the evolution of the earths atmosphere?
the most important, the conversion of Carbon Di-oxide to Oxygen!
Scientists can determine if oxygen existed in earths Archean atmosphere by?
The Archean atmosphere is believed to have been free of free oxygen. Banded iron formations did not occur till near the end of the Archean period.
How did the addition of oxygen to earths atmosphere affect the evolution of life?
it made it possible 4 it to be plants animals and human life
How did earths atsmophere change during the precambrian time?
It changed from a reducing atmosphere containing no free oxygen to an atmosphere containing oxygen. The evolution of life on Earth "terraformed" the planet.
What is the geologic principle that the same geologic processes that operate today operated in the past to change Earths surface?
uniformitarianism
What is the particles outside earths atmosphere?
The particles outside the Earths atmosphere are called, meteoroids.
How do geologists think earths atmosphere formed?
how do geologists think earths atmosphere is formed
What is the measurement of the earths time divided into periods?
geologic time scale
Which of earths layers is the coldest?
The crust is the coldest geologic layer.
