Simon is comparing the communities of living things that live in two bodies of water: a long river, and the ocean bay just beyond the mouth of the river. Comparing which of these abiotic factors would be MOST useful for Simon to explain the differences in the communities? Assume that the water is unaffected by pollution.

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth