APES Unit 1 Test Flashcards
Where are old-growth forests located in the United States
Alaska
What factors define terrestrial biomes
climate, geography, latitude, altitude, nutrients and soil
What factors define aquatic biomes
salinity, depth, amount of light, dissolved oxygen, nutrients, temperature
What factors influence NPP?
Sunlight and CO2
Which biomes have short growing seasons? Why?
Tundra because of the extremely low temperatures, desert because of the high temperature
Why are grasslands so productive?
Because they have high levels of nutrients in their soil and moderate rainfall
How do abiotic factors influence biotic factors
Depending on temperature, water availability, and soil composition can affect whether plants can grow there, and therefore if animals can and the amount of animals that can
How do humans affect the phosphorus cycle?
mining and application of phosphate-based fertilizers leading to increased phosphorus levels in soil
What steps are in the phosphorus cycle?
phosphorus in rock, mining, fertilizer, run-off, uptake by heterotrophs,
phosphate uptake in plants
How do humans affect the carbon cycle?
burning too many fossil fuels causing atmospheric storage to be overfilled contributing to climate change
What steps are in the carbon cycle?
atmospheric storage, combustion, respiration, photosynthesis, decomposition, fossil fuels, ocean storage
How do humans affect the hydrological cycle?
building dams or taking large amounts of water for agriculture, precipitation patterns and evaporation are being altered
What are the steps of the hydrological cycle?
precipitation, condensation, evaporation, transpiration, infiltration, run-off
How do humans affect the nitrogen cycle?
making fertilizers & burning fossil fuels, altering amount of fixed nitrogen in earth’s ecosystem
What are the steps of the nitrogen cycle?
atmospheric nitrogen gas, denitrification, decomposition, ammonification, nitrification, nitrogen-fixing bacteria
