Ozone is dissolved oxygen so your correct answer is A
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A) increasing trade with the Europeans
B) desire to make a religious pilgrimage to Mecca
C) improved transportation infrastructure
D) rise of the middle class that could afford leisure travel
AHHH!!! Tsunami BIG. Tsunami bad. Tsunami please go away.
Answer: And while 25% of Western pharmaceuticals are derived from Rainforest ingredients, less than 1% of these tropical trees and plants have been tested by scientists. The U.S. National Cancer Institute has identified 3000 plants that are active against cancer cells. 70% of these plants are found in the Rainforest.
Explanation:
The answer would most likely be Sea-floor spreading because sea-floor spreading mostly occurs at divergent boundaries.