Oftentimes one will find a high amount of what element in an explosive material a) sulfur b) antimony c) carbon d) oxygen e) potassium Which one of the following elements in plants is not remobilised? 1. Sulphur 2. Phosphorus 3. Calcium 4. Potassium A native e...
1. informal Also called: what-d'you-call-it a person or thing the name of which is unknown, temporarily forgotten, or deliberately overlooked 2. informal unspecified assorted material 3. (Furniture) a portable stand with shelves, used for displaying ornaments, etc Collins English Dictionary – ...
Where is the Earth's mantle located? What parts of the Earth make up the asthenosphere? The mantle makes up what percent of Earth's volume? What are two layers of the earth make up the lithosphere? What is pyroclastic material called inside the Earth?
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The mantle is also chemically distinct from the crust, in addition to being different in terms of rock types and seismic characteristics. This is due in large part to the fact that the crust is made up of solidified products derived from the mantle, where the mantle material is partially mel...
aJasp was doing great this morning. He tried to practice the class material and he did it well. I suggest that he can have more speaking practice to help the fluency and some pronunciation. :) Jasp今晨是做伟大。 他设法实践类材料,并且他很好它。 我建议他可以有更多讲的实践帮助流畅和某一发...
For example, silicon carbide is the material of choice for the brakes and clutches in cars. It's also used as the ultra-durable cladding on saw blades and drill bits for metal, masonry and stone. At a different extreme, pure fused silicon ("fused quartz") makes a type of glass so ...
The time scale for sampling the lower mantle is ten times longer. This leads to vertical gradients in chemistry in the mantle; the upper mantle contains depleted and recycled material, while deeper mixing takes place more slowly. Plumes may transfer material from deep in the mantle to the ...
When stars are born, they collapse from massive clouds of dust and gas. Sometimes, the very same clouds that form a supernova-remnant nebula serve as ready material for the formation of new stars. (That's how our ownSolar System formed: out of the ashes of a predecessor star, our pre...