One effect that plentiful harvests had on ancient civilizations of the mainland's river valleys was to help have larger populations and the need to have materials to survive.
D.
Small particles of rock are carried by wind over an area. The particles start to accumulate making hills of sand.
Let me know if I’m wrong!
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:
They are the descendants of Persian Jews.
From the Persian Empire aka Iran.