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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Let points a (1,2), b (-3,0), c (0,3) calculate Ab: Ac as a function of the unit vector.
Answer:
It is worthwhile to make long-term goals for your future dreams. This is because if you are willing enough to fulfill your goal, your future dream will come true. Also, you will be glad that you stuck with your goal because of the outcome. Working hard can make your dreams come true.
Science fiction is indeed <span>fantasy that is based on scientific fact.
So it is TRUE.</span>
