GHG's
Why are scientists exceedingly concerned about the effect of methane gas emissions even though they make up a very small percentage of all emissions?
Methane (CH4) has a high GWP so it can trap more heat than some other gases
What are some effects of global warming?
species extinction
change in typical precipitation and wind patterns
more frequent severe weather/hurricanes/ etc.
loss of agricultural area due to rising seas
etc.
What are some ways to help protect endangered species?
place remaining species in a national park, or other protected place (nature preserve, sanctuary, refuge)
outlaw poaching
enforce laws restraining hunting, trade and poaching of threatened species
How does carbon dioxide in the atmosphere affect organisms in the ocean?
This leaves fewer carbonate ions decreasing the number and size of shells.
Calcifiers or shell builders will be smaller and have thinner shells
When conducting experiments and collecting data, what add the most support to the reliability of the data?
duplicate the experiment under the same conditions and get similar results
What greenhouse gas comes only from anthropogenic activities?
chlorofluorocarbons (CFC's)
How does climate change increase the spread of infectious disease?
warmer weather allows some disease vectors to exist in areas that are usually off limits because they are too cold.
What are some qualities of nonnative species that often allow them to become invasive?
-high reproductive rates
-no natural predators
-tolerate a wide range of conditions in the environment
-generalist
What conditions lead to lower pH in the oceans
-increased burning of fossil fuels
-increased emissions from cars and trucks
-increased deforestation
Which piece of legislation addresses the issue of ozone depletion in the stratosphere?
Montreal Protocol
Which greenhouse gas is the most abundant and not from anthropogenic sources
Water vapor
Sea levels have risen in the last hundred years as a result of global warming. How does an increase in temperature affect the sea this way?
thermal expansion of water
and/or
melting of polar ice sheets
Invasive species are: True or False
1.low reproductive rates
2. prey on native species
3. introduced to nature by human activity
4. plants or animals
1. False
2. True
3. True
4. True
What is the leading cause of ocean warming?
increased global temperatue
What piece of legislation addresses international import and export of exotic species
CITES
Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)
Explain how the following components make up an Arctic ecosystem feedback loop
methane permafrost global temperature
global temperature increases--> permafrost melts-->methane is released --> global temperature increases.
List at least two anthropogenic and
two non-anthropogenic sources of GHG's
ANTHROPOGENIC- agriculture, manufacturing,
NON- ANTHROPOGENICvolcanic eruptions, melting permafrost
What is a possible disadvantage of protected habitats?
The species within a protected area are isolated from their species outside the area
T/F Ocean warming causes:
1. decreased ocean sedimentation
2. decreased sea level
3. beaching of whales and dolphins
4. coral bleaching
1. F
2. F
3. F
4. T
What are the top two factors that are most dangerous to biodiversity?
Habitat destruction and invasive species
What component of CFC's starts a reaction that breaks down ozone in the stratosphere?
chlorine
If global temperatures continue to rise what happens to the rate of evaporation?
Which green house gas will become more abundant?
Evaporation will increase with increasing temperatures. This will result more water vapor in the atmosphere.
What factor is the largest threat to species around the globe?
Habitat destruction/loss
What is the main cause of decreasing pH in oceans
increased atmospheric CO2 from burning fossil fuels and transportation
H. I. P. P. C. O.
H= HABITAT
I= INVASIVE SPECIES
P=POPULATION (PEOPLE)
P=POLLUTION
C=CLIMATE CHANGE
O=OVEREXPLOITATION