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adelina 88 [10]
3 years ago
15

Which was least likely to have been a component of Earth’s atmosphere before life began?

Physics
2 answers:
skelet666 [1.2K]3 years ago
7 0

Oxygen would be what I'd choose. Before life was created was also before plants were around, so there was nothing to create oxygen through photosynthesis.

Otrada [13]3 years ago
4 0
The answer to this question is a) sulfur
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Subduction occurs at which of the following tectonic plate boundaries?
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I think the answer is:
B) oceanic crust-continental crust
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Confining pressure is where ________. Confining pressure is where ________. pressure is parallel to the bedding planes pressure
Brrunno [24]

Answer:

d) Forces are applied equally in all directions

Explanation:

Confining pressures are pressures imposed on a layer of soil by the weights of the layers on top of it. Confining pressures occur as a result of equal transmission of forces between the layers of a material (usually rock and soil).

It can also be described as an equal, all-sided pressure produced by overlying rocks in the crust of the earth.  As the confining pressure increases, the critical elastic energy of the layers of the material transforms from linear to exponential.

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3 years ago
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An observer on Earth sees rocket 1 leave Earth and travel toward Planet X at 0.3c. The observer on Earth also sees that Planet X
Verizon [17]

Answer:

0.625 c

Explanation:

Relative speed of a body may be defined as the speed of one body with respect to some other or the speed of one body in comparison to the speed of second body.

In the context,

The relative speed of body 2 with respect to body 1 can be expressed as :

$u'=\frac{u-v}{1-\frac{uv}{c^2}}$

Speed of rocket 1 with respect to rocket 2 :

$u' = \frac{0.4 c- (-0.3 c)}{1-\frac{(0.4 c)(-0.3 c)}{c^2}}$

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u'=0.625 c

Therefore, the speed of rocket 1 according to an observer on rocket 2 is 0.625 c

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3 years ago
Examine the cross-sectional slice of a stem of a mint plant. Which statement most specifically describes mint?
Maslowich

The available options are:

Mint is a dicot.

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Mint is a dicot.

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Given the fact that Mint is considered to be a member of Lamiaceae, an angiosperm plant which is characterized by typically having leaves that consist of reticulate vacation and appears like veins in structure. It also has a seed that contains two cotyledons.

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