Question 21N.1A.SL.TZ1.16
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.1A.SL.TZ1.16 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 16 | Adapted from | N/A |
The diagram shows the carbon flux in gigatonnes per year between some of the Earth’s global reservoirs.
[Source: Figure 7.3 and Table 7.1 from Denman, K.L., G. Brasseur, A. Chidthaisong, P. Ciais, P.M. Cox, R.E. Dickinson, D.
Hauglustaine, C. Heinze, E. Holland, D. Jacob, U. Lohmann, S Ramachandran, P.L. da Silva Dias, S.C. Wofsy and
X. Zhang, 2007: Couplings Between Changes in the Climate System and Biogeochemistry. In: Climate Change
2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the
Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt,
M. Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.]
What can be deduced from the information in the diagram?
A. Arrows S are mainly due to respiration of marine plants and animals.
B. Photosynthesis is a component of both arrows Q and S.
C. Every day, more carbon is removed from the ocean than is added.
D. Ocean carbon is stored as dissolved calcium carbonate.
[1]
B
