Organisms and Environments

5.9A: Observe the way organisms live and survive in their ecosystem by interacting with the living and nonliving components.

5.9B: Describe the flow of energy within a food web, including the roles of the Sun, producers, consumers, and decomposers.

5.9C: Predict the effects of changes in ecosystems caused by living organisms, including humans, such as the overpopulation of grazers or the building of highways.

5.9D: Identify fossils as evidence of past living organisms and the nature of the environments at the time using models.

5.10A: Compare the structures and functions of different species that help them live and survive in a specific environment such as hooves on prairie animals or webbed feet in aquatic animals.

5.10B: Differentiate between inherited traits of plants and animals such as spines on a cactus or shape of a beak and learned behaviors such as an animal learning tricks or a child riding a bicycle.