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BIO II: Exam 2

Practice Questions

QuestionAnswer
Which month are GHG's the HIGHEST? March/April
Which month are GHG's the LOWEST? September/October
Where on Earth is it HOTTEST? Equator
Where on Earth is it warming the fastest? North Pole
What are 3 sources of atmospheric CO2? 1) Respiration 2) Combustion 3) Decomposition
What are 2 CO2 sinks? 1) Diffusion into ocean 2) Biosphere, Photosynthesis
Which 2 feedbacks contribute most to the ARCTIC warming faster than the rest of the world? 1) Albedo Feedback 2) Permafrost Feedback
Where does the 50% of our emissions that doesn't stay in the atmosphere go? It goes into the biosphere through photosynthesis, then diffuses into the ocean
What is the biggest source of uncertainty in climate models? Human decisions
True or False: An organism that shivers and migrates is definitely an endotherm FALSE
Which organism do you expect to have the highest metabolic rate per kg (kcal/hr/kg)? (Big or small) SMALL, a mouse (terrestrial omnivore, 1 ounce)
Why is oxygen consumption a reasonable proxy (stand-in) for metabolic rate? Because cellular respiration usually consumes oxygen as it breaks down glucose
Most homeotherm's are endotherms and as a result, their metabolic rate increases.... .... when the temperature of the environment is higher or lower than the thermoneutral zone
Abiotic Factors of Kelp forests - Cold temperatures - Hold lots of dissolved Oxygen - Has lots of nutrients - High vertical complexity
What are the 2 kinds of complexity that is characteristic of the kelp forests? 1) Vertical complexity 2) Biodiversity
Why do sea otters have an anomalously high metabolic rate? - they have a larger surface area to volume ratio (their hairs) than most other marine mammals - they spend nearly all their time in the water instead of on land - they do not have blubber like most other marine mammals
Troe or False: Species that like hot temperatures will migrate towards the equator, rather than the poles FALSE
If it is 80 degrees outside and we have 80% relative humidity and it gets colder, the relative humidity will _____________. Increase
Where does the 50% of our emissions that doesn't stay in the atmosphere go? It goes into the biosphere through photosynthesis and it diffuses into the ocean
What is the biggest source of uncertainty in climate models? Human decisions
Created by: emily.zegarra
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