When he suggested that change should be brought about "by any means necessary," malcolm x was

He suggested that violence could be used to bring about the change.

The great difference between Malcolm X and Martin Luther King was that the first one advocated for violence as a valid mean to get his goals while Martin Luther King believed in peaceful means.

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

hope this !

have a great day!