Which statement best describes the source of new combinations of alleles in a zygote? a. only egg cells are a source of new combinations. b. only sperm cells are a source of new combinations. c. germ cells are a source of new combinations. d. somatic cells are a source of new combinations.

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