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19 Cards in this Set

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  • Back
(T/F) Recycling is only true recycling if the trash is used to mke something (such as an aluminum can (that we can actually use).
True
(T/F) The maximum sustainable yielf of reef fish is exceeded on Guam if we see that most fish is caught are still too small to breed.
True
(T/F) Alternatve energy sources generally produce much air pollution as conventional energy sources.
False
(T/F) If ecotourism (nature tourism) has a low impact on the environment, then it is an example of sustainable development.
True
(T/F) Indicator bacteria are bacteria that cause deadly diseases like cholera or plague.
False
(T/F) Eutrophication can often be observed when we see population explosion of algae (such as a red tide).
True
(T/F) "Source reduction" is another term for creating less waste material in the first place (instead of figuring out what to do with the waste afterwards).
True
(T/F) Sea level rise is expected to be 1-3 feet in the next 100 years due to ozone depletion.
False
(T/F) One of the same chemicals that causes ozone depletion also causes global warming.
True
(T/F) If we have more people on earth, then it is likly that they will cause more global warming (if they want a "western" style of living).
True
(T/F) Sea level rise can contaminate the water lens on atoll islands with salt water.
True
(T/F) Oil runoff from cars on the roads is an example of point-source pollution on our reefs.
False (it is non-point source)
(T/F) Global warming is expected to cause extiction of some species of plantsand animals, if it continues at its present rate.
True
(T/F) Risk assessment involves only scientific facts.
False
(T/F) Hazardous waste includes only chemicals that directly poison us (such as mercury).
False
Reasons for calculatingthe maximum sustainable yield of a species that is hunted for food include:
a) the need to feed as many people as possible without overusing the resource
b) the desire to lower the carrying capacity of the environment for humans
c) the need to know if hunting regulations are needed to prevent the hunted species from going extinct
d) the need to harvest all the individuals that have reached breeding age
a), c)
Bad effects of the current method of sewage treatment on Guam (and many other islan in the region) include:
a)the possibility that we are "swimming in a sewer" when the electricity fails for a long time
b)the increased growth of corals on our reefs
c)a negative effect on our tourist industry for those tourists that visit the beaches or swim in the ocean
d)less eutrophication near the exit of the sewage pipes on the reef
a), c)
Good reasons for decreasing our reliance on traditional energy sources are
a) these sources are not renewable (on any realistic human time scale)
b)mining and drilling for oil, coal or natural gas can cause pollution
c)alternative energy sources will become more expensive in the future
d)the price of gas is rising at least in part beacuse the supply is limited
a), b), d)
Examples of unsustainable resource use include:
a)harvesting of sea turtles on Guam to feed anyone who wants to eat turtle
b)having a hunting season on deer on Guam that lasts only two weeks
c)limiting the harvest of medicinal plants to those people who are treated by traditional healers
d)harvesting mahimahi or tuna in the traditional Micronesian way (from small boats with only a few fishing lines)
a)