Explanation:
Serpentine
- Formation: it forms through serpentinization, a geological low-temperature metamorphic process where low-silica mafic and ultramafic rocks are oxidized and hydrolyzed with water into serpentinite.
- Characteristics: rich in magnesium and water, light to dark green, greasy-looking and slippery feeling. It can resist the transfer of heat. A source of asbestos, architectural stone, ornamental stone, gem material
- Minerals present: it follows the formula (X)2-3(Y)2O5(OH)4 where X can be magnesium, iron, nickel, aluminum, zinc, or manganese; and, Y will be silicon, aluminum, or iron.
Green Schist
- Formation: they form by regional metamorphism of mafic igneous rocks through depth of burial, and proximity to batholiths.
- Characteristics: The green is due to abundant green chlorite
- Minerals present: actinolite and epidote mainly, but they can also include quartz, orthoclase, talc, carbonate minerals, and amphibole.
Basalt Pillow
- Formation: it forms when lava of basaltic compositions erupted underwater. The rapid cooling of the lava forms the pillow-shaped bodies.
- Characteristics: they are volcanic igneous rocks, very dark, almost black color.
- Minerals present: Basalt has a lower percentage of silica and a higher percentage of iron and magnesium than other volcanic rocks.
Umber
- Formation: it develops in Cyprus massive sulfide deposits.
- Characteristics: is not one precise color, but a range of different colors, from medium to dark, from yellowish to reddish to grayish depending on the iron oxide and manganese in the clay
- Minerals present: contains iron oxide and manganese oxide and sulfide precipitates like pyrite.
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Answer:
i think like this am not sure tho
Explanation:
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
Answer:
If jobs are scarce in your locality, with layoffs occurring and home ownership put in jeopardy, values fall. Like a domino effect, fewer people can afford to buy a house. Owners lower their prices to compete in a diminished market.
Answer:
the Appalachian Mountain
Explanation:
The European settlers in what is now the United States quickly started to push the natives of their lands and create their colonies. As they were doing so, they started to establish towns and villages, create their own plantations, implement their rules and laws. But this was all happening along the eastern coastline and in close proximity to it. The reason for this was that they had a very big natural barrier in front of them that didn't allowed them to spread out toward the west. This natural barrier were the Appalachian Mountains. The Appalachians are a mountain range that separates almost all of the eastern coastline area from the interior of the country. These mountains are relatively high, had very dense impenetrable forests, and were very dangerous for crossing, so the Europeans avoided them until they developed better means of travel and transportation.
Earth was able to retain an atmosphere because of its gravity. It is <span>the same force that keeps us anchored to Earth. Molecules in our atmosphere are constantly moving, spurred on by energizing sunlight. If Earth were much less massive, gravity's grip would be weaker.</span>