Life Science 1. I can identify the general purpose of selected animal systems (digestive, circulatory, respiratory, skeletal, muscular, nervous, excretory, and reproductive). 2. I can explain how animal systems (digestive, circulatory, respiratory, skeletal, muscular, nervous, excretory, and reproductive) work together to perform selected activities. 3. I can explain that the traits of an individual are influenced by both the environment and the genetics of the individual. 4. I can distinguish between inherited and acquired traits. 5. I can explain how behavioral characteristics (adaptation, instinct, learning, habit) of animals help them to survive in their environment. 6. I can describe the physical characteristics (traits) of organisms that help them survive in their environment. 7. I can describe how fossils provide evidence about how living things and environmental conditions have changed. 8. I can analyze the relationship of environmental change and catastrophic events (for example: volcanic eruption, floods, asteroid impacts, tsunami) to species extinction. 9. I can explain how scientists classify living organisms.