Ultraviolet rays. a). Is the major cause of skin color evolution

b). Is strongest at the equator

c)Can penetrate the skin and helps produce Vitamin D

d). All of the above

Which is a character of nuclear fusion but not nuclear fission

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?