Question 1
The creosote bush secretes chemical toxins into the soil in order to compete for
◦ sunlight.
◦ moisture.
◦ nutrients.
◦ warmth.
Question 2
The Great Basin of the United States is arid because
◦ of its interior position within the continent.
◦ of its location on the lee side of mountain ranges.
◦ the subtropical high pressure zone is located overhead all year.
◦ all of these are correct
◦ of its interior, leeward position only