Which statement best describes plastics? plastics are poor insulators because the electrons in the atom are tightly bound and unable to move between other atoms. poor insulators because the electrons are able to move freely between the different energy levels within the atom. good insulators because their atoms have a single loosely bound electron in the outer shell that can move freely between other atoms. good insulators because they have electrons that are tightly bound in their shells which makes them unable to move between other atoms?

In 1859, charles darwin published the first edition of on the origin of species, which explained his observations of various groups of animals that showed great similarities but minor differences. darwin concluded that if a population of one species separates into two different populations that live in separate locations, then over the course of many generations the different populations can develop into different species. this idea predicted many future biological findings and became the basis of modern biology. darwin’s explanation for why different species exist is best described as a(n) law. theory. inquiry. hypothesis.