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Q: The Cretaceous-Tertiary extinction, the most famous of the Big Five, has been attributed to what major event(s) that triggered the extinction of the dinosaurs
A: 1. Ordovician-Silurian extinction event. 2. Late Devonian extinction. 3. Permian-Triassic extinction event. 4. Triassic-Jurassic extinction event. 5. Cretaceous-Tertiary(Paleogene) extinction event.
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Original conversation
User: Why do some people argue that the Cenozoic era should not be called the "Age of Mammals"?

User: The Cretaceous-Tertiary extinction, the most famous of the Big Five, has been attributed to what major event(s) that triggered the extinction of the dinosaurs

Weegy: 1. Ordovician-Silurian extinction event. 2. Late Devonian extinction. 3. Permian-Triassic extinction event. 4. Triassic-Jurassic extinction event. 5. Cretaceous-Tertiary(Paleogene) extinction event.
IfNotSo|Points 7291|

User: The best description of uniformitarianism is ___.

Weegy: It is frequently summarized as "the present is the key to the past," because it holds that all things continue as they were from the beginning of the world
jacolitos|Points 195|

User: The idea that the processes that formed the earth have taken more than thousands of years instead of quickly is known as _____.

Weegy: catastrophism
Greenpepper|Points 1626|

User: According to scientific evidence, the age of the earth is about _____ years.

Weegy: The Earth is 3.5 Billion years old.
IfNotSo|Points 7291|

User: The mass extinction that was most likely caused by the formation and retreat of glaciers was the _____.

User: The principle of uniformitarianism states that _____.

User: Stromatolites are _____.

User: what law of thermodynamics energy is released as unusable heat energy into the environment.

User: what law ofthermodynamics Energy can't be created destroyed.

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Asked 3/9/2011 1:08:41 PM
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Questions asked by the same visitor
what law of thermodynamics Energy can't be created destroyed.
Weegy: FIRST law of thermodynamics Energy can't be created destroyed. User: what law ofthermodynamics Energy can only be changed from one form to another (More)
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Not Answered
Updated 2/21/2015 10:34:14 AM
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Nitrogen fixation
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Expert Answered
Updated 10/12/2014 12:44:18 AM
1 Answer/Comment
Nitrogen fixation is a process in which nitrogen (N2) in the atmosphere is converted into ammonium (NH4+).
Added 10/11/2014 4:50:23 PM
This answer has been confirmed as correct and helpful.
Confirmed by selymi [10/12/2014 12:44:20 AM]
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