The answer is C. The widely used technique for finding extraterrestrial life is use of SETI (search for extraterrestrial intelligence) dishes that listen for radio waves from outer space. NASA has also been sending radio waves to outer space with messages that could purportedly be decoded by alien intelligent life.
La respuesta sería d<span>
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Are you attending laurel springs school? if so I GO THERE !!!!! I need the same help :) I know one of them was pollution
The answer is one of the sandy options i think two but i am not completely sure
