Lec 1 - Carbon Cycle

Terrestrial plants:
I. Perform cellular respiration producing
Carbon dioxide
II. Perform photosynthesis fixing carbon
dioxide
A.I
B.II
C.I and II
D.Neither
E.Wait – wouldn’t that balance?

C.I and II

Which takes carbon dioxide out of the
atmosphere?
A.Respiration
B.Photosynthesis
C.Combustion
D.Consumption
E.Posting on social media
about global warming.

B.Photosynthesis

Which puts carbon dioxide into the
atmosphere? (multi-answer)
A.Respiration
B.Photosynthesis
C.Combustion
D.Consumption
E.Pretending global
warming isn’t happening

A.Respiration, C.Combustion, D.Consumption

The Earth's climate ________.
A.Has been stable (unchanged) over the history of the planet, but now it is
changing rapidly.
B.Has experienced changes in the past due to natural (non-human) causes.
C.Will stabilize over the next century, according to the predictions of most
scientists
D.Has changed only once due to the evolution of green photosynthesizing
plants
E.History is undeterminable because there is no method of studying climatic
history of the planet

B.Has experienced changes in the past due to natural (non-human) causes.

According to ice core data,
A. Carbon dioxide and water vapor concentrations correlate with each other.
B. Carbon dioxide and oxygen concentrations correlate with each other.
C. Carbon dioxide concentrations and temperature correlate with each other.
D. Carbon dioxide concentrations and temperature are inversely correlated with
each other.

C. Carbon dioxide concentrations and temperature correlate with each other.

What is a temperature anomaly?
A. A temperature value that is an
outlier or very different from the
average.
B. A temperature value that
increases over time.
C. The difference between the long-
term average temperature and the
temperature that is actually
occurring.
D. When something not being
measured in the dataset causes
the temperature to change.

C. The difference between the long-term average temperature and the temperature that is actually occurring.

What would happen if a significant quantity of carbon dioxide was
removed from the Earth’s atmosphere?
A. Global temperatures would increase.
B. Other greenhouse gases, such as methane, would make up for the lost
CO2 and absorb more heat.
C. The rate of polar ice cap melting would increase.
D. Plants would increase their rates of photosynthesis.
E. Global cooling.

E. Global cooling.