In the red shift of radiation from a distant galaxy, a certain radiation, known to have a wavelength of 530 nm when observed in the laboratory, has a wavelength of 566 nm. (a) What is the radial speed of the galaxy relative to Earth

3is a crest4 is a trough 2 is the amplitude 1 is the wavelength

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

relationships are meaning less your heart will get broken.: (