The total ecological footprint for humanity is expected to be
a. twice the planet's ecological capacity by the year 2015
b. 30% higher than the planet's ecological capacity by the year 2035
c. 60% higher than the planet's ecological capacity by the year 2035
d. 30% higher than the planet's ecological capacity by the year 2015
e. twice the planet's ecological capacity by the year 2035
E
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