Which of the following is a pure science that aims to increase the scientific knowledge base, the purpose is just to learn something new? basic research
applied research
structuralism
natural selection

Agroup of engineering students from purdue university reported that its licking machine, modeled after a human tongue, took an average of 364 licks to get to the center of a tootsie pop. twenty of the group's volunteers assumed the licking challenge-unassisted by machinery-and averaged 252 licks each to the center.