#15 calculate the redshift for galaxy FExampley Percei3 which has a resting wavelength of 400nm but is observed to have a wavelength of over 480 nm when observed from earth (does not have to be a complete sentence) (btw the subject is geoscience but that isn't a subject you can choose on here)

Atown is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d