SCIN 138 Week 7 Exam Questions and Answers | American Public University, 2021

Evidence of recent climate change is found in . • A. decreased crop yields • B. all of the above • C. reduction of sea ice • D. ocean acidification Question 2 of 25 0.0/ 4.0 Points Data from the past 100 years (years average) indicates that global temperatures have increased approximately °C: • A. 0.1 • B. 0.2 • C. 0.5 • D. 1.2 • E. 1.5 Question 3 of 25 4.0/ 4.0 Points The most probable cause of anthropogenic warming in the foreseeable future is the increase in . • A. carbon dioxide • B. chlorofluorocarbons • C. sunlight • D. ozone • E. chlorine oxides Question 4 of 25 4.0/ 4.0 Points The process by which increased levels of CO2 in the atmosphere lead to enhanced growth of vegetation, which then removes CO2 from the atmosphere through photosynthesis is termed a . • A. positive feedback • B. reservoir • C. Milankovitch Cycle • D. sink • E. negative feedback Question 5 of 25 4.0/ 4.0 Points The radiative balance between incoming and outgoing energy is moderated by the . • A. climate • B. global warming • C. weather • D. atmosphere • E. anthroposphere