Population Ecology (Ch. 4)
What is the number of organisms per unit area?
What is population density?
What is the scientific study of human population size, density, and movement called?
What is demography?
What is the variety of life in an area determined by the number of species?
What is biodiversity?
What is the excessive use of species with economic value called?
What is overexploitation?
What are the building blocks of matter?
What are atoms?
Give one example of a density-independent limiting factor.
What is weather, fire, human activity, or pollution?
What factor allowed humans to change Earth’s carrying capacity?
What are technological advances?
What type of diversity involves inheritable traits within a population?
What is genetic diversity?
What is the separation of ecosystems into smaller pieces of land?
What is habitat fragmentation?
What type of bond forms when atoms share electrons?
What is a covalent bond?
What is the maximum number of individuals an environment can support long-term?
What is carrying capacity?
What is the distribution of males and females across age groups called?
What is age structure?
What type of diversity refers to the number of different ecosystems in the biosphere?
What is ecosystem diversity?
What process causes algae overgrowth and oxygen depletion in water due to nitrogen and phosphorus?
What is eutrophication?
What type of reaction absorbs energy and has products with higher energy than reactants?
What is an endothermic reaction?
What reproductive strategy is used by small organisms with short lifespans and many offspring?
What is the r-strategy (r-strategist)?
What events can alter population trends besides birth and death rates?
What are disease and war?
What is the gradual process of species becoming extinct?
What is background extinction?
What are species that are transported to new habitats and reproduce quickly called?
What are invasive species?
What are biological catalysts that speed up reactions without being used up?
What are enzymes?
What is it called when the birthrate equals the death rate in a population?
What is zero population growth (ZPG)?
Why are scientists concerned about human population reaching carrying capacity?
What is the overuse of biosphere resources per person?
What type of extinction happens when many species disappear in a short period of time?
What is mass extinction?
What is the increasing concentration of toxins at higher trophic levels in a food chain?
What is biological magnification?
What macromolecule stores and transmits genetic information?
What are nucleic acids?