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Irina-Kira [14]
3 years ago
8

Please help with this question, thank you. ​

Biology
1 answer:
11111nata11111 [884]3 years ago
8 0

Answer:

Pollution

Explanation:

The other three are beneifical to the nitrogen cycle.

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The wave movement of P-waves allows them to pass through liquids and gases while S-waves cannot. Due to this differential phenomenon of these waves, the reflection of P –waves and S-waves after an earthquake – and as their vibrations are picked up by seismographs around the earth - enabled scientists to determine the properties of the  layers of the earth’’s interior.

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