Autotrophs differ from heterotrophs because they a. utilize oxygen to burn food. b. do not require oxygen to live. c. make carbon dioxide as a product of using food. d. make their own food from carbon dioxide and water.

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