Darwin proposed the “theory of evolution by natural selection” in which he stated that certain members of species have adaptations to help them while other members who don’t have the helpful adaptation die out. PLS HELP ME! WHAT DOES IN THE MISSING BOX??!
ILL GIVE U 5 STARS JUST HELPPP

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2

Just on number 2 (all parts), and if you do answer explain in detail

What can happen to an atoms electrons when an electric current is passed through the atom?