Oceanography but the study of ocean creatures is Marine Biology
The Aegean Sea occupies an area of sunken land called a graben.
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Answer:
erosion affects not only economic development but climate changes, because the process of soil erosion releases carbonium ions into the air, while carbon dioxide is the primary cause of global warming
Explanation:
Kievan Russia declined in the 12th century because of internal problems and the Mongol invasions. Around 1300, the Orthodox Church chose Moscow as its center. As a result, Moscow, originally a region of Russia, began to emerge as an important city. it is about 1000 mi or 2000 km