Explain the importance of respiration as the process whereby all organisms obtain energy. Students investigate and understand that organisms within an ecosystem are dependent on one another and on nonliving components of the environment. 7.1.5-d Describe and explain how matter is recycled in an ecosystem. Students explore interactions that exist among members of a population. Describe how limiting factors can affect the organisms in a population.
Students explore interactions and interdependence among populations in a biological community.
7.1.7-a Differentiate between organisms, populations, and communities. Identify the organisms in a food web and describe the roles they play in a community. Students investigate and understand how organisms are adapted to abiotic factors in a biome. 7.1.8-a Distinguish between ecosystems and biomes. 7.1.8-c Observe and give examples of specific adaptations that animals and plants have to survive in a particular biome.