Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
Answer: higher; increase .
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</span><span>Snow is white, and thus has a <u> higher </u><u /> albedo than bare ground. if global warming decreases snow cover, the resulting change in albedo is likely to <u> increase </u><u /> further warming.
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The Red Sea and the Suez Canal are of strategic value in the region because this is one of the most important transport points for oil in the entire world. Much of the oil that comes from the Persian Gulf travels through the Suez Canal on its way to Europe and the United States. Control and stability of this area is of vital importance to the United States and European governments and markets.
