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Arada [10]
3 years ago
7

The main difference between intrusive and extrusive igneous rocks is ___?

Geography
1 answer:
Alexxandr [17]3 years ago
4 0
The correct answer is A. Intrusive is due to magma cooling deep within Earth's surface and extrusive is due to it cooling at Earth's surface.

The intrusive rocks are forming deep bellow the surface, and they cool off very slowly. Because of that they are forming big crystals.
The extrusive rocks are forming on the surface, and they cool off very quickly. Because of that they are forming small crystals.
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Explanation:

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4 0
4 years ago
Darwin’s hypothesis that explains differences between species is better known as “evolution by natural selection.” Please select
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Answer:

False

Explanation:

Given that Darwin's evolution by natural selection is a theory that is based on the principle that several organisms that possess suitable characteristics to their immediate environment or habitats have a greater tendency to survive and produce more offspring.

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8 0
3 years ago
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Match each eon with the appropriate characteristic or event. 1. Hadean eon 2. Archean eon3. Proterozoic eon4. Phanerozoic eona.
Andreyy89

Answer:

  • 1. Hadean eon     ---    a. formation of the solar system
  • 2. Archean eon   ---   c. toxic atmosphere; first bacteria
  • 3. Proterozoic eon   ----  d. buildup of oxygen; first eukaryote
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Explanation:

  • The Hadean Eon represents the formation of the planet that is time before the reliable fossilized record of the life and ended about 4.0 billion years ago. The Archean eon is characterized by the toxic atmosphere and the arrival of the first single-celled organism as bacterial life forms.  
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4 0
3 years ago
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