Savannas covered more than ________ of Earth's land surface before human intervention, but have been extensively modified by human-caused fire.
A) 5 percent
B) 10 percent
C) 40 percent
D) 90 percent

Question

Quizplus · Accepted Answer

Before human intervention, savannas covered approximately 40% of Earth's land surface. However, human-caused fire has extensively modified these ecosystems.

Savannas Covered More Than ________ of Earth's Land Surface Before