Global Change

Question 1

Stratospheric Ozone

Answer 1

protects against UV radiation
CFCs produces chlorine monoxide, breaks up ozone, depletes ozone layer
layer is thinnest over Antartica
chlorine can break down ozone without being destroyed
Montreal Protocol- end of CFC production

Question 2

Global Warming

Answer 2

greenhouse gases trap sun’s energy in atmosphere, doesn’t allow it to radiate out into space
loss of ozone layer exposes more UV radiation- leads to cancer, weak immune systems, cataracts
kills animals: leads to extinction

Question 3

Loss of biodiversity

Answer 3

increased UV rays kill phytoplankton & primary producers (destroys base of food chains)
ruins ecosystems- less fish and crops because no producers
can ruin entire food webs, ruins habitats, melts ice caps where penguins and polar bears live