[Campbell Biology P.682] According to the passage, what was a significant environmental impa... | Practice Question

According to the passage, what was a significant environmental impact of the early forests during the Carboniferous period?

  • A: Increased atmospheric CO2 levels, leading to global warming.
  • B: A large drop in CO2 levels, resulting in widespread glacier formation.
  • C: Formation of extensive peat bogs, which inhibited coal production.
  • D: Accelerated erosion rates due to enhanced root secretion of acids.

Explanation

The passage states: 'One major effect was that early forests contributed to a large drop in CO2 levels during the Carboniferous period, causing global cooling that resulted in widespread glacier formation.'