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The correct answer is - silver.
The Appalachian Mountain range, located in the eastern part of the United States, in close proximity to the Atlantic coastline, are rich in multiple natural resources. Some of the most common resources being the coal, petroleum and natural gas, iron, as well as lumber from multiple types of high quality trees. The silver, on the other hand, is not one of the natural resources that are abundant in this region of the country, thus can not be included into the riches of the Appalachians.
Asia is called a subcontinent because it is very large land and it is separated from other countries by water.
Answer: Sedimentary rock
Explanation:
From google (There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved.)
Both developed and developing countries have had significant negative impacts on the environment.
Answer: Option D
<u>Explanation:</u>
For every activity that you take to develop the economy, has an impact on the environment and most of the consequences of such activities are negative only.
Mostly the activities of the developed and the developing countries have negative impact on the environment which has led to the degradation of the quality of the environment and causing ill effects even to the health of the people.