Light is shining in the different objects shown. which of these materials absorbs the light most?

Iknow #2 is d. i just need to know why

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.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?