18 16 1.4 - Built-up land Ashing ground 12 World blocapacity 1.0 Forest Grazing land cropland 0.8 - 0.6- Carbon footprint 0.4 0.2- 1960 1970 1980 1990 2000 2008 Year FIGURE 1.7 Humanity's ecological footprint has nearly tripled since 1961, when we began to collect global evironmental data. Number of planet Earths
18 16 1.4 - Built-up land Ashing ground 12 World blocapacity 1.0 Forest Grazing land cropland 0.8 - 0.6- Carbon footprint 0.4 0.2- 1960 1970 1980 1990 2000 2008 Year FIGURE 1.7 Humanity's ecological footprint has nearly tripled since 1961, when we began to collect global evironmental data. Number of planet Earths
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Question
In the Ecological Footprint discussion, examine the shown figure. Which factor shown has the largest effect? The second largest? Which has the smallest? Can you explain the idea of a “global hectare”? Finally, which factor has increased the most since 1963?
Transcribed Image Text:18
16
1.4 -
Built-up land
Ashing ground
12
World blocapacity
1.0
Forest
Grazing land
cropland
0.8 -
0.6-
Carbon
footprint
0.4
0.2-
1960
1970
1980
1990
2000
2008
Year
FIGURE 1.7 Humanity's ecological footprint has nearly tripled since 1961, when we began to
collect global evironmental data.
Number of planet Earths
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