Which is true of ultraviolet rays?
they your body produce vitamin d.
they are visible to the naked eye.
they provide the energy that makes your morning toast.
they carry information to televisions and radios.

How do dying stars contribute to the formation of planets

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.