Amazon on Fire ■ 339Tr y Something New
(^9) Which of the following behaviors could decrease the production
of greenhouse gases, and thus perhaps curb global warming?
(a) using ethanol or biodiesel rather than fossil fuels to power
autos
(b) using coal rather than gas to warm homes
(c) using solar or wind power rather than fossil fuels to produce
electricity
(d) all of the above
(e) none of the above
(^10) Reviewing Figure 18.13, identify the type of environment at
your latitude, and explain how it is influenced by Earth’s convection
cells.
(^11) Discuss briefly (in one to two sentences) how the more
extreme weather caused by global warming may affect where
you live.
Leveling Up
(^12) Looking at data Review Figures 18.8 and 18.9. Describe the
change in atmospheric CO 2 levels from 1880 to the present, and
the change in average global temperature for the same time period.
What were the CO 2 level and the average temperature in 1880? in
1960? in 2016? Is there a relationship between the two variables?
How would you explain the pattern you see here?
(^13) Life choices You can estimate your impact on the planet by
using one of the many “footprint calculators” on the Internet.
Take three online quizzes available from organizations such as
the Global Footprint Network, the Nature Conservancy, and the
U.S. Environmental Protection Agency. Each site calculates your
ecological footprint a little differently. Compare and contrast
the different sites you used. Which one do you think is the most
accurate? Why? Which one do you think is the most superficial?
Why? Write a list of ways you can decrease your ecological
footprint, and try to adhere to your new lifestyle!
(^14) Write Now biology: climate denial Watch the documentary
Frontline’s Climate of Doubt (2012), produced by PBS. Write an essay
reflecting on what you learned from the film and from this chapter
about global warming. Use your knowledge of your ecological
footprint to reflect on how important it is for all citizens to be
aware of this global crisis.
(^3) Which of the following is an abiotic component of the
biosphere?
(a) algae
(b) insects
(c) lichen
(d) water
(e) none of the above
(^4) Place the following components of the hydrologic cycle in
the correct order by numbering them from 1 to 5, beginning with
precipitation.
a. precipitation
b. uptake by plants
c. transpiration
d. water percolation into soil
e. condensation
(^5) Select the correct terms:
(Climate / Weather) is the short-term atmospheric conditions
in an area, while (climate / weather) is the average atmospheric
conditions in a given area over a long period of time. (Climate
change / Global warming) consists of the long-term and large-
scale changes in atmospheric conditions, which have been brought
about by (climate change / global warming), an increase in the
average global temperature.
Challenge Yourself
(^6) The carbon cycle and the water (hydrologic) cycle are similar in
that
(a) both cycle molecules between abiotic and biotic components of
the environment.
(b) photosynthesis is a critical process in both.
(c) both are involved in global warming and climate change.
(d) all of the above
(e) none of the above
(^7) An ecologist is studying an area of forested land that
experiences a forest fire every 5 years. In the years between forest
fires, the area of study absorbs 300 million tons of CO 2. If a forest
fire releases 200 million tons of CO 2 in this area, does this forested
area act as a carbon sink or a carbon source? Why?
(^8) Place the following events in the correct order of their onset by
numbering them from 1 to 5, beginning with the earliest.
a. Climate change, including more extreme weather
b. Increase in human population and activities
c. Increase in release of CO 2 and other greenhouse gases into
the atmosphere
d. Increase in calls to control the production and release of
greenhouse gases
e. Global warming E^ D^ q^ M
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