What are the largest divisions of time in the Geologic Time Scale?
What Era are we living in?
Which is more exact?
What Law states that older rocks/fossils will be found in lower layers of the Earth?
About how old is the Earth thought to be?
What vertebrates DID NOT live at the time of dinosaurs?
Scientists believe that the first type of lifeforms on Earth were
About how much of Earth's history passed before there was oxygen in our atmosphere?
What is thought to be the source of all water on Earth?
TRUE or FALSE Earth has has survived more than one ice age.
Where do scientists believe life most likely began on Earth?
Eons are divided into 3...
Fossils are usually used for _______ dating of rock layers.
What type of scientist collects and studies fossil evidence?
What can you infer if fossil A is found in a layer of the earth that is above fossil B?
At one time the Earth had a large amount of oxygen. This caused...
How do scientists believe the moon formed?
Are all of the time divisions on the Geologic Time Scale equal in length?
From which continent do scientists believe the earliest form of humans came from?
What do we call the study of the physical structure and history of the Earth as told through rocks
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