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It is not known exactly how many ice ages Earth has experienced, but a reasonable estimate would be at least 20 known events and probably many more.
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Where is the true history of the earth?
You can find much of this history right here in Earth; for example, looking at geological records.
How many years of earths history do geologists study?
4.6 billion years
What evidence supports the idea that the earth's magnetic north and south pole have changed many times throughout earth's history?
nothing scientists made it up to stop global warming
What is mars history origin?
same as earth's
What can you conclude from the fact that there have been just four eons in Earth's history?
Because Earth's history is 4.567 billion years old, you can conclude that an Earth eon covers a large segment of time.
How many major extinction events have occurred during the Earth's history?
five
How many earthquakes happen in NY in the year 2009?
There were no earth quake's in NY in the year 2009. Although there is a history of earth quake's in different year's there. See the related link to the history of Earth Quakes in New York.
What does the rock and fossil record represents?
The history of the Earth and the history of life on Earth.
How many times in the history of earth has the number of species dropped drastically?
simple answer 6
What are the units that break up earth's history?
Earth history is primarily divided into eras.
What is used to divide Earth's history into smaller pieces of time?
Earth's history is divided into eras.
What is the geologic time scale a record of?
The history of the planet.A record of the geologic events and life forms the earth's history.
What is The study of the earth's physical structure and history is?
Astronomy This is the study of the earth and physical structure and history
What is the contribution of big bang theory to the Earth's history?
Without the big bang there wouldn't be an Earth to have a history.
What is a word that starts with the letter y that has to do with earth history?
What is a word that starts with the letter y that has to do with earth history?
How many years of earth history was precambrian time?
from about 4.6 billion to 543 millions years ago
About how many people died in earth's history?
It is impossible to provide an exact number, but estimates suggest that billions of people have died throughout Earth's history. The number continues to increase with each passing day.
