Something that is magnetic can be changed into a weak magnet by what?

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Which label correctly identifies what x represents in the concept map?