The fossil record provides a glimpse into the evolution of life on Earth. It shows that there have been remarkable changes in the kinds of organisms that have been abundant at different times during the past 3.5 billion years. Part A - The history of life according to the fossil record. Classify each event in the history of life into the appropriate eon or era. Drag each phrase to the appropriate bin.

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.