Answer:
B
Explanation:
machanical waves like sea waves need a medium.
but electromagnetic waves never need a medium
but can also travel through medium
Answer:
I Think It's The Second One
Tell Me If I'm Wrong
Answer: True no need for an explanation..
Celsius: -11.7
Kelvin: 261.5
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The graphite of the pencil sits on top of the paper and won't affect the results. If you use ink, it will seep into the paper and itself be subjected to the chromatographic process.
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