The answer for "What is petrified wood made of?" would be minerals.
There are Seven NORTH AMERICA
EUROPE
ASIA
SOUTH AMERICA
AFRICA
AUSTRALIA
ANTARCTICA
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Answer:
The UNCCD set out a definition of desertification in a treaty adopted by parties in 1994. It states that desertification means “land degradation in arid, semi-arid and dry sub-humid areas resulting from various factors, including climatic variations and human activities”.
Explanation:
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