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.
Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys. Before pollution they were white and lighter colors. <span />
C. Gradual
Hope this helps!
Hey could you just mind yiu own business like sheshhhhhhhh
Going to go to the mall and dad and mom to pick me out and then I’ll come back to my house and then I’ll come over and pick up my pizza from the house