BIO 182 FINAL EXAM ASU QUESTIONS & ANSWERS RATED 100% CORRECT!!

Describe boreal forests - -Forms in sub-arctic -Dominated by highly cold tolerant trees -Very cold winters and short, cool summers -Low precipitation -NPP is low Describe grasslands - -Conditions are too dry to enable tree growth -Moderate temps and rainfall -NPP lower than forest communities Describe subtropical deserts - -Very low rainfall -High annual temps -Low NPP Describe temperate forests - -Trees are leafless in winter -Rain is moderately high -Freezing temps in winter -NPP is moderate Describe the arctic tundra - -Dominated by small shrubs -Very low temps -Very low annual rainfall Describe tropical forests - -Dominated by plants with broad leaves -Known for species diversity -Warm temps-High annual rainfall -Highest NPP Environmental impacts of agricultural advancements - -Irrigation causes the depletion of ground water -Fertilizers cause Nitrogen pollution of lakes, oceans and ground water How are mass extinctions detected and how many have been detected? - They're detected geologically, and there have been 5 detected How are temps determined by solar irradiance and the tilt of the Earth? - -Regions at or near the equator receive more sunlight than regions that are close to the poles due to the Earth's tilt -Solar irradiance causes seasons in the Northern and Southern hemispheres How can an exotic species contribute to extinction? - -An introduction of a new species, that could possibly become an invasive species -An exotic species could carry pathogens How does the presence of mountains and large bodies of water create climate conditions? - - Mountain ranges create rain shadows How have humans impacted terrestrial biomes? - -By physically changing the landscape -Farming, logging, & urban development -Indirect effects: pollution, invasive species, climate change How is energy transferred through the food pyramid? - Decomposer -> primary producer -> primary consumer -> secondary consumer -> tertiary consumer