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True or False
The greatest density of species occurs at the North Pole. - ANSWER
✔✔False
What is the tragedy of the commons? - ANSWER ✔✔the tendency
for a common resource to be overused
True or false: cheating ( free riding) confers the smallest benefit when
most of the group cooperate to invest? - ANSWER ✔✔False. when
more ppl invest, there is a higher benefit for the freeloaders
,true or false: punishment creates a cost that balances the benefit of
selfishness - ANSWER ✔✔True
how can we promote a cooperation on a larger scale - ANSWER
✔✔rebates( benefits) for participants
punishment for non-participants
what are 3 strategies for when species numbers are getting low -
ANSWER ✔✔Captive breeding
DNA banks
protection
Extinction due to 3 human activities - ANSWER ✔✔hunting, habitat
destruction, global warming
True or False: if productivity enhances diversity, one should see more
species in deep tropical waters than along shallow coastlines -
ANSWER ✔✔false we see more productivity in deep tropical waters,
BUT we predict that shallow coastlines should rather have it
true or false: Primary productivity is likely necessary, but insufficient
condition for biodiversity - ANSWER ✔✔true
,true or false: greater productivity could support more individuals of a
species without supporting more species - ANSWER ✔✔true. just b/c
you have a huge amount of primary productivity does not mean it would
give more amount of species. it could simply have more individuals from
the same species
More productivity = more organisms, but it is not equal to________ -
ANSWER ✔✔more species
why is the more speciation at the equator - ANSWER
✔✔temperatures are stable= more specialized organisms
no change in temperatures in high or low altitude
increased cost to dispersal over a climate gradient=> low gene flow=>
high alopatric speciation=> ___________ - ANSWER ✔✔very
sensitive to climate changes
you have to be a _______ to survive changes - ANSWER
✔✔generalist ( BUT species in tropics are specialists)
Low Latitiudes= _________thermal niches
High Latitudes= __________thermal niches - ANSWER ✔✔narrow
broad
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, true or false: a more specialized species should occur over a narrow
range of altitude or latitude - ANSWER ✔✔true for both altitude and
latitude
primary consumers - ANSWER ✔✔first organisms in the chain to eat
the other organisms
eat the photosynthetic organisms = herbivores
Tropical species have the _______ latitudional ranges
Species at high latitudes have the _______ latitudional ranges -
ANSWER ✔✔lowest
highest
greenhouse effect - ANSWER ✔✔warming/heat that results when
solar radiation is trapped by the atmosphere
what is anthropogenic - ANSWER ✔✔caused by humans
the rate of global warming appears to be accelerated in the _____ (
consequences) - ANSWER ✔✔arctic ( ice melting, island and species
disappearance, overabundance of salt water, shortage of fresh water )