Bio 400 Exam 4 A+ Pass Solved Correct Brand New!!

Bio 400 Exam 4 A+ Pass Solved Correct Brand New!! Ecology - Answer- Scientific study of interactions between organisms and their environment Biotic - Answer- Living things Abiotic - Answer- Non-living factors Climate - Answer- Average weather for a location Precipitation - Answer- rain, snow, sleet, or hail that falls to the ground. Biome - Answer- Ecosystem types or habitats Evapotranspiration - Answer- Evaporation of h2o from soil through plants Global warming - Answer- Rise in the average temperature worldwide Pre-Industrial [CO2] (1800s) - Answer- 280 ppm [CO2] anytime in last 3-5 million years - Answer- 415 ppm Global climate change - Answer- Shift from weather patterns of past 10,000 years Permafrost - Answer- Frozen soil under tundra & northern forests Tipping Points - Answer- Point at which further change no longer needs a driving force, positive feedback loops take over Mass Extinction - Answer- Sudden drop in the # of species on earth Overshoot - Answer- Exponential growth exceeds K, then crashes Logistic growth - Answer- R declines as K is reached Carrying Capacity (K) - Answer- Maximum sustainable population size in a given environment Exponential growth - Answer- R is constant Growth rate (r) - Answer- % change in size over time Emigration - Answer- E, exiting Immigration - Answer- I, entering 3 basic survival patterns - Answer- High survival rate when young Constant survival rate Low survival rate when young Survival rate - Answer- % surviving/unit time, often expressed as related to age Demographics - Answer- Statistical descriptions of a population Random - Answer- Unpredictable, lack of strong cooperative competitive, or resource factors Uniform - Answer- Spaced evenly, due to competitive interactions Clumped - Answer- In groups, most common & due to cooperative interactions and uneven resources Dispersion - Answer- Pattern of spacing in a population: clumped, uniform, & random Community - Answer- All the species that share an area & could interact Trophic Structure - Answer- Map of who eats who & can be broken into food chains Food chains - Answer- Paths of energy & nutrient transfer in a community Food web - Answer- Interconnected food chains; more stable isolated food chains Trophic levels - Answer- Position in a food chain or web relative to energy input Producers - Answer- 1st Trophic level; vast majority is photoautotrophs Consumers - Answer- All heterotrophs Herbivores - Answer- Plant & algae eaters Carnivores - Answer- Animal eaters Omnivores - Answer- Plant & animal eaters Detritivores - Answer- Decomposers; mostly bacteria, fungi, & invertebrates