Do you agree or disagree the fossil record tell us about the history of life on earth and how life has changed over time ?

answer; i believe that the correct answer is (a) potassium(k)

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.