Isotopes
The answer has to be 20 characters long so this is irrelevant.
Answer:
How are radio telescopes used to explore space?
Since the 1930s, when the first radio signals from space were detected by Karl Jansky, astronomers have used radio telescopes to explore the Universe by detecting radio waves emitted by a wide range of objects.
Explanation:
How are radio telescopes used to explore space?
Since the 1930s, when the first radio signals from space were detected by Karl Jansky, astronomers have used radio telescopes to explore the Universe by detecting radio waves emitted by a wide range of objects.
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Answer:
D the others are highly pollutant expesially nuclear and natural gas
Explanation:
