Q1. Imagine that a sample of sediments are cemented together to form a sedimentary rock. Then, that rock is heated and compressed into a metamorphic rock. The metamorphic rock is then melted to form an igneous rock. Which of the following statements is correct regarding the mass of the rocks?
1. The mass of the igneous rock is less than the masses of the metamorphic rock and sedimentary rock.
2. The masses of the igneous rock and the metamorphic rock are greater than the mass of sedimentary rock.
3. The masses of the igneous rock and the metamorphic rock are less than the mass of sedimentary rock.
4. The masses of the sedimentary rock, the metamorphic rock, and the igneous rock are same.
Q2. Summarize the climate changes that have occurred from the past to the present.
Guess what you think the Earth will look like into the 21st century. Consider the weather and changes in geological features.
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