EEB 2100 UCONN EXAM 2 ACTUAL 2025/2026 CORRECTLY ANSWERED

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EEB 2100 UCONN EXAM 2 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Most profound nutrients being added to ecosystems by humans - Answer -Nitrogen and phosphorus Nitrogen facts - Answer -makes up 78% of Earths atmosphere and many enzymes and proteins that humans need Nitrogen cycle: Fixation - Answer -Fixation of N2 gas is done by microorganisms using energy to break down the gas into organic NOx compounds(Nitrate and Nitrite) 1/3rd of free-living bacteria(cyanobacteria) conduct fixation 2/3rds of plant-associated bacteria do this as well Nitrogen cycle: Mineralization - Answer -NOx compounds are converted into NH4+ (ammonium) Organic Nitrogen compounds (NOx) are inaccessible to plants Process done by fungi and bacteria in the soil Nitrogen cycle: Nitrification - Answer -NH4+ (ammonium) is turn into NOx compounds performed by bacteria to create energy byproduct of the process is the creation of N2O which is a greenhouse gas that is 300x more effective at warming the earth than carbon dioxide Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com Nitrogen cycle: Denitrification - Answer -NOx compounds are turned back into nitrogen gas (N2) performed by microbes Anammox Process - Answer -NH4 + NO2 --> N2 makes up 30-50% of N2 in oceans Fertilizer and Nitrogen - Answer -The nitrogen necessary for fertilizer used to be harvested from guano and bird poop Haber-Bosch process - Answer -Iron catalyst, high temperature and pressure used to break N2 bond to form Ammonia(NH3) Haber-Bosch effects - Answer -Leads to great acceleration as more fertilizer can be created and used to increase food production. Doubles the amount of people fed per hectare of crop land however, over half of fertilizers used are lost from the land and end up in other places like ponds and streams Green revolution - Answer -Technologies in 1950s that massively increased global agricultural productivity Nitrogen addition by humans - Answer -300 megatons total of Nitrogen to land where around half is done by humans Fossil fuels = 25 MT Fertilizers = 75 MT Fertilizer Crops = 60 MT Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com