The human body needs food to grow and stay healthy. What are the main nutrients in food? A. Sugar and salt. B. Water and air. C. Vitamins and minerals. D. Rocks and soil. 相关知识点: 试题来源: 解析 C。食物中的主要营养物质是维生素和矿物质;A 选项糖和盐不是主要营养物质;B 选项水...
The cars that we drive, the roads that we travel, the buildings that we live in, and the fertilizers used to produce our food are all made using minerals. In the United States, about three billion tons of mineral commodities are consumed each year to support the standard of living of 300...
Are all vitamins produced by the human body? No, many vitamins, such as vitamin C, cannot be produced by the body and must be consumed through food. 8 What happens if there's a deficiency in minerals or vitamins? Deficiencies can lead to various health issues, from anemia due to lack ...
What are Minerals? - A mineral is a natural inorganic solid with a specific internal structure and a chemical composition that varies only within specific limits. Minerals are the solid constituent of earth. Visit BYJUS to learn more about it.
Huge numbers of these microbes began producing food by photosynthesis, which, of course, also freed up enormous amounts of oxygen. And lots of that oxygen interacted with the atoms of existing minerals, creating rust out of iron, for instance, … reacting with a whole range of different metal...
What are the borate minerals? Boron: Boron is a chemical element that has the atomic number 5. It is described as a metalloid because its properties fall between those of metals and nonmetals. It was discovered in 1808 by Louis-Josef Gay-Lussac and Louis-Jacques Thenard. ...
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minerals: macrominerals and trace minerals. Your body needs macrominerals such as calcium, phosphorus, magnesium, sodium, potassium, chloride, and sulfur in large amounts. Trace minerals such as iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium are needed in very small ...
15 / 20 2020 春人教新目标八年级英语下册同步测试:Unit 7 What's the highest mountain in the world Section B Sand is made up of very small pieces of rock,soil and minerals(矿物质).It can take tens of thousands of years to form(形成).But now,we are using sand more quickly t...
The delta rocks in which these fossils are found are commonly red due to oxidized iron minerals, indicating that the deltas formed in a climate that had alternate wet and dry periods. If there were periods of drought, any adaptations allowing the fish to survive the dry conditions would have...