[Campbell Biology P.700] The text mentions that about 63,000 km² of tropical rainforest are ... | Practice Question

The text mentions that about 63,000 km² of tropical rainforest are cleared each year, and the remaining 11 million km² could be eliminated in 175 years at this rate. Additionally, Figure 30.18 states that "nearly half of Earth's tropical forests have been cut down". Based on this combined information, what approximate percentage of the original tropical forest area is estimated to have been cleared?

  • A: Less than 25%
  • B: Approximately 50%
  • C: More than 75%
  • D: Nearly 90%

Explanation

Figure 30.18 explicitly states that 'nearly half of Earth's tropical forests have been cut down'. If nearly half has been cleared, then approximately 50% of the original area remains cleared.