Possible Short Answer Question 1: (15 points total) Use the information in Table
ID: 115535 • Letter: P
Question
Possible Short Answer Question 1: (15 points total) Use the information in Table 1 and Table 2 to explore the carbon cycle. Table 1: Carbon Reservoir Size (note: 1 metric ton= 1,000 kg) Mass of Carbon (billions of metric tons) Reservoirs Carbonate Rocks (R) (limestone (CaCO) & dolostone (CaMg(CO3) Upper Mantle (M) Fossil Fuels (F) (IPCC AR5 recognized sources) Oceans (O) Soils (S) (dead organic matter and permafrost) Atmosphere (A) Photosynthesizers (P) re-industrial 0,000,015 100,000,000 0,350 38,000 4,000 590 590 resent 10,000,000 00,000,000 0,000 38,155 4,000 830 560 3, bicar arbonate Table 2: Carbon Fluxes (note: metric ton 1,000 kg) Mass Movement (billions metric tons per year) re-industrial Natural Fluxes resent 123 60 62 62 80 79 0.3 0.2 l) photosynthesis (A P) 11) respiration by photosynthesizers (P A) III) decomposition of photosynthesizers (P S) IV) diffusion from soil to air (S A) V) diffusion from atmosphere to ocean (A O) VI) diffusion from ocean to atmosphere (O A) VIIa) weathering of silicate rocks (A O) VIIb) precipitation of carbonate rocks in ocean (O R) VIII) subduction of carbonate rocks (R M) 1) emission from volcanoes (M A) X) conversion of organic matter to fossil fuels (P F) XI) subduction of fossil fuels (F- M) Anthropogenic Fluxes XII) burning of fossil fuels (F A) XII) concrete production (R A) XIV) deforestation (P A) XV) release of stored carbon in tundra (S A) 110 60 61 0.3 0.2 0.1 0.01 0.1 0.01 7.5 0.5 (may rise)Explanation / Answer
ascertainment bias. What can be done to prevent this bias in experimental studies?
You have enrolled 400 subjects into a clinical trial, and randomized 200 into each study arm. You compare groups at baseline and become concerned when you notice that 42% of the subjects in active treatment arm and 26% in the placebo group are 65 year