8.3 Population Ecology
in AP Biology
Population ecology is the study of factors affecting the size of a population and how it changes over time.
8.2 Energy Flow Through Ecosystems
in AP Biology
Ecosystem dynamics involve two main processes: energy flow and chemical cycling.Energy enters most ecosystems as sunlight, is converted to chemical energy by autotrophs, passed to heterotrophs as food, and dissipated as heat.
8.1 Responses to Environment
in AP Biology
Ecology is the scientific study of the interactions between organisms and the environment. These interactions determine both the distribution of organisms and their abundance.
7.11 Origins of Life on Earth
in AP Biology
Two major hypothesis for life on Earth. Panspermia: Life from extraterrestrial life. Abiogenesis: Life from non-life. Requires 4 major milestones to occur.
7.10 Variation in Populations
in AP Biology
Variants that are well adapted to one environment may not be well adapted to another environment.
7.9 Extinction
in AP Biology
Extinction is the loss of a group of organisms, such as a species. Levels of biodiversity are determined by rates of speciation and rates of extinction.
7.8 Speciation
in AP Biology
Speciation, the origin of new species, is at the focal point of Darwin’s evolutionary theory. Evolutionary theory must explain how new species originate and how populations evolve.
7.7 Phylogeny
in AP Biology
Phylogeny is the evolutionary history of a species or group of related species. The discipline of systematics classifies organisms and determines their evolutionary relationships.
7.6 Continuing Evolution
in AP Biology
Evolution has led to new, rapidly spreading diseases, called emerging diseases.
7.5 Evidence of Common Ancestry and Evolution
in AP Biology
Biogeography provides information about the evolutionary history of organisms, specifically where they originated and how they were able to disperse.