Life Science Multiple Choice Quiz Worksheet Page 17
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1717
QUESTION 10
The figure shows some major causes of global warming and the increase in carbon
dioxide (CO
) in the earth's atmosphere since 1965.
2
380
370
360
350
340
330
320
310
300
290
1965
1970
1975
1980
1985
1990
1995
2000
year
(a) (i) Define the term global warming.
(1)
(ii) Using the graph, read off the increase of CO
between the years 1965 and
2
2000.
(1)
(iii) Explain the influence that the increase of CO
in the atmosphere has on
2
global warming.
(2)
(b) Deforestation is one of the processes which increase the CO
in the atmosphere.
2
(i) List two other processes that also increase the CO
in the atmosphere.
(2)
2
(ii) Name one process that decreases the CO
in the atmosphere.
(1)
2
(iii) Suggest how governments can contribute to the prevention of deforestation. (3)
(c) Suggest three effects that global warming can have on Namibia.
(3)
(d) Sometimes human activities can damage the ozone layer which causes UV
rays to reach the earth.
(i) Give the name of the gas that can deplete the ozone layer.
(1)
(ii) List any two activities that release this gas into the atmosphere.
(2)
(iii) Explain the importance of the ozone layer.
(2)
[18]
Total: [130]
[Turn over
JSC 2007, Life Science
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education