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svetoff [14.1K]
3 years ago
13

For which of the following can a relative age be determined? Select all that apply. A. fossil

Geography
2 answers:
dimaraw [331]3 years ago
7 0

Answer:

B. rock layer

Explanation:

Elan Coil [88]3 years ago
5 0

B)Rock layer is the best.

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In which mountain range is machu picchu located?
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35. What factor primarily controls the viscosity, and therefore the explosiveness of a magma? A. Dissolved gases B. Pressure C.
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Answer:

E. Mineral content

Explanation:

Viscosity is an internal property of a fluid that offers resistance to flow, the nature of volcanic eruptions is highly dependent on magma viscosity and also on dissolved gas content (dissolved gases become trapped by thick magma and the magma chamber begins to build pressure).  

The viscosity of magma is controlled by the size of the molecules that comprise it.

<em>Felsic lava contains elements of small size (sodium and aluminum), these elements form polymers and large crystalline macromolecules like silica, the more extensive silicate chain molecules the more viscous the magma becomes, this happens because larger molecules have stronger  intermolecular bonds preventing movement and spreading. </em>

Mafic and ultramafic lava, on the other hand, have lower viscosities, also contain lower quantities of silica and aluminum and are rich in magnesium oxide, which does not form large molecular structures, therefore lava flows smoothly, unrestricted by intermolecular forces.  

I hope you find this information useful and interesting! Good luck!  

   

8 0
3 years ago
Which of the following statements about rainforests is a myth? (1 point)
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Answer:

the first one

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Every other statement listed is true, including the one about the soil.

The only False statement is that they will grow back on their own.

4 0
3 years ago
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4 0
2 years ago
You have been elected United States Senator of Alaska. The other senator from Alaska has just proposed a law that would open the
GaryK [48]

Answer:

I would not because Alaska has a very protected wildlife system and this would affect the animals in a very negative way and this would also cause great amounts of climate change to the ecosystem.

Explanation:

sorry if this does not help but at least i tried lol.

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