climate change Flashcards
(10 cards)
main reason co2 acts as greenhouse gas
absorbs infrared radiation refleced by the surface of the earth
how does studying pollen in peat bogs provide evidence of climate change
pollen preserved in peat bogs
plant species identifies by its pollen
climate affects the type of plants growing
depth of peat correlates with period of time since pollen was produced
changes in pollen over time indicates changes in climate
cause of global warming
increase of carbon dioxide and methane in the atmosphere that trap infrared radiation
examples of evidence for climate change
dendrochronology, peat bog pollen and ice cores
impact of climate change on the effects of leaf rust on the yield of wheat crops
climate change could result in increased temperature
increase temp increases growth of leaf ruse (reproduction)
increased rainfall/ humidity could increase spread of leaf ruse
more leaf rust= less crop yield
why are anthropogenic emissions of greenhouse gases affecting the climate
burning fossil fuels increases amount of co2 in atmosphere
therefore more infrared/ heat energy trapped in atmosphere
increases mean surface temperature
what is meant by the term Q10 temperature coefficient
ratio of the rate of an enzyme reaction taking place at temperatures differing by 10 degrees c
investigation to determine Q10 for an extract of lipoprotein lipase enzyme
use two water baths with temperatures of 20 and 30 c
provide excess triglyceride
control conc of lipoprotein lipase
measure concentration of triglyceride at stated time intervals
find initial rates
rate at T/10 / rate at T
why may data not be useful for predicting future climate change
cannot assume a trend will continue
not enough data collected
data is collected from only one location
data fluctuates
ecosystem definition
organisms and non living components in a habitat
