Fossils that can be used to date rocks are known as index fossils. They have a specific set of traits. Question 1 options: easily recognized, existed over a wide area, existed for a limited/short period of time easily recognized , lived a long time, and lived in a small area easily recognized, and still are alive today easily recognized, and related to bacteria

Four statements about the development of the atomic model are shown below. a: electrons have wavelike properties. b: atoms have small, negatively charged particles. c. the center of an atom is a small, dense nucleus. d: atoms are hard, indivisible spheres. which order of statements represents the historical development of the atomic model? c-d-a-b c-d-b-a d— в-а — с d-b-c-a