0 I have not yet read this book The dangerous days of Daniel I don't have any idea on this also but I can give you and him at that the book name is dangerous days of Daniel by the title only we know that Daniel was having many days dangerous or bad days for him I can help you this much only because I have not read this book yet
Answer:
B I saw that same question when I was in 2nd grade and got it right
Answer:
concrete
Explanation:
Researchers think regolith on Mars could serve as a replacement for concrete components. The Mars rovers have used gas chromatography, mass spectrometry, and laser spectrometry to determine the composition of martian soil. Mars regolith is mostly silicon dioxide and ferric oxide, with a fair amount of aluminum oxide, calcium oxide, and sulfur oxide. The composition varies from place to place on the planet’s surface because of variability in asteroid collisions and the weathering by wind and water, in ancient oceans and in some modern water flows. But no spacecraft has returned to Earth with actual samples of the material.
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