If you're talking about the ones in space then I would say communication.
If you send a text or make a call or send an email it goes to the satellites first and them goes to whomever you sent it to:)
I hope I helped:)
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Answer:
Can you please give the options because there are many questions to this?
Answer:
40
Explanation:
given
product of two numbers =160
hcf =4 we know that
hcf*LCM=product of the numbers
LCM*4=160
LCM=160/4
LCM=40
Inner planets have thicker atmospheres.