Question 1
Savannas covered more than ________ of Earth's land surface before human intervention, but have been extensively modified by human-caused fire.
◦ 5 percent
◦ 10 percent
◦ 40 percent
◦ 90 percent
Question 2
Sclerophyllous vegetation is characterized by
◦ stunted growth.
◦ leathery leaves.
◦ deep roots.
◦ all of these
◦ stunted growth and leathery leaves only.