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. Students recognize that ecosystems, communities, populations, and organisms are dynamic and change over time. Interpret and analyze graphs of change in population size over time. Students analyze the relationships between ecosystem dynamics and human activity within the Chesapeake Bay Watershed.