The water molecules can vibrate in three different modes when light hits it. The red, orange, yellow and green wavelengths of light are absorbed so that the remaining light we see is composed of the shorter wavelength; blues and violets. This is the main reason why the colour of water is...
The most common vegetation type on earth—grassland—is often agricultural in usage. Many are either directly grazed, or, as is the case for the most productive ones, harvested for hay which is then consumed when pasture is no longer growing enough to support cattle or sheep. Rapidly increasin...
Rich environments on Earth such as soil in temperate zones have 108–109 microbes per gram of soil. The energy flux at the surface would allow the sorts of densities found on Earth, but the failure to detect organic molecules on the Martian surface suggests low microbial densities (Biemann ...
9. The number of atoms and molecules on Earth will stay the same while gravity works, so, if there are no natural substitutes for exhausted natural resources, there are always synthetics, which we can make using available molecules with our technology, plus the inexhaustible cheap energy that n...
Most common natural sweeteners: Sucrose: It is the most widely used natural sweetener; also known as table sugar. It is obtained or extracted...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answ...
(ECM) molecules like collagen 4 and 6 (COL4 and 6), and perlecan, with matrix metalloproteinase 2 (MMP2) biomarker levels unchanged, suggesting connective tissue remodeling. In a large-scale proteomics study (space omics), two canonical protein pathways—necroptosis and GP6 signaling/COL6—were...
By watching what people search for, click on and say online, companies can aim "behavioural" ads at those most likely to buy. 2013年考研真题(英语一)阅读理解 Section Ⅱ Companies are unlikely to file many more patents for human DNA molecules - most are already patented or in the public dom...
Answer to: The most common group of minerals are in the (a) ___ group. This is not surprising since the two elements most common in the...
a geologist at WHOI and coauthor of the paper. “Some people have argued that any water molecules that were present as the planets were forming would have evaporated or been blown off into space, and that surface water as it exists on our planet today, must have come much, much later—...
The chemical composition of Earth is quite a bit different from that of the universe. The most abundant element in theEarth's crustis oxygen, making up 46.6% of Earth's mass. Silicon is the second most abundant element (27.7%), followed by aluminum (8.1%), iron (5.0%), calcium (3.6...