Gemstone crystals should be very difficult to scratch. In 1812, a mineralogist named Friedrich Mohs developed a scale to rank the hardness of minerals. The diamond is at the top of the list. Not only is it the hardest gemstone, it is also the hardest substance known to humans! Rubies and sapphires are the next-hardest gemstones. Topaz, quartz, and emeralds are farther down on Mohs’ scale. The scale is useful in
minerals.
Which word goes in the blank?
analyzing
mining
renewing
detecting
Answers: 2
English, 21.06.2019 16:30, simmonsl7790
Magnesium is the fourth most abundant mineral in the body and is essential to good health. magnesium is needed for more than 300 biochemical reactions in the body. it maintain normal muscle and nerve function, keep bones strong, keep one’s heart rhythm steady, and supports a healthy immune system. magnesium also regulate blood sugar levels, promotes normal blood pressure, and may play a role in energy metabolism and protein synthesis. doctors and scientists are trying to determine whether magnesium may play a role in preventing and managing disorders such as hypertension, cardiovascular disease, and diabetes. which is the main idea of this paragraph? a. the role of magnesium in human nutrition is being studied intensely. b. magnesium may be related to the body’s metabolism and other healthy functions. c. magnesium appears to contribute to hypertension, cardiovascular disease, and diabetes. d. magnesium and a healthy immune system are separate diseases.
Answers: 2
English, 22.06.2019 02:20, theodoredenetz8316
Which point(s) of view do whitman's and coleridge's speaker use ?
Answers: 2
English, 22.06.2019 04:10, PONBallfordM89
Which bibliography entry is written correctly and completely? a. johnson, marie. the solar age. chicago: energy options press, 2014. b. front page story. houston chronicle. 5 apr 2013. c. “will solar work? ” science news. march edition. d. friends of solar. mother earth society, accessed 15 jan 2014.
Answers: 1
Gemstone crystals should be very difficult to scratch. In 1812, a mineralogist named Friedrich Mohs...
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