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trapecia [35]
2 years ago
13

Why do astronomers believe there is a 9th planet

Geography
1 answer:
iren2701 [21]2 years ago
6 0

Answer:

There are gravitational effects causing a cluster of orbits for a group of ETNOs, this is high evidence there is a 9th planet past Neptune.

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D. All of the above;

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B. Fragile;

The permafrost soil, also known as gelisol, is a soil type that is very fragile. This type of soil is very thin, it has almost no natural protection, the humus layer is is in the top couple of mm, and it is easily eroded. The slightest disturbance in its surroundings will mean the end of this soil type very quickly.

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C is the best answer for this
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Difference between windvane and windsock
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both show the direction the wind is blowing. wind vanes and windsocks differ in shape.

Explanation:

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