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:
During the first phase, the population growth rate rises as the death rate declines while the birth rate remains high. In the second phase, the growth rate declines (but remains positive) due to a decline in the birth rate.
Explanation:
According to the World Bank and United Nations poerty threshold/borderline, that is, the minimum level of income deemed adequate in a particular country. In 2005, the World Bank came out with a figure (revised largely due to inflation) of $1.25 a day at 2005 purchasing-power parity (PPP), and in 2015 the World Bank updated the international poverty line to $1.90 a day.
Based on the presentation of the World Bank, (B) Maria earns $1.50 per day and (D) Tim earns $ 1.00 per day will be classified as poor.
It would be <span>D. It was a private company chartered by Queen Elizabeth . The countries and the colonies controlled by East India Company would later be transfer to the British crown but before that it is a company that is chartered to trade with other countries especially to India where they are mostly interested in.</span>
Answer:
The statement true about plant domestication according to Carl Sauer is: Option B: It first occurred in diversified habitats with a variety of species.
Explanation:
Plant domestication is the process in which wild plants are artificially evolved into crop plants.
Carl Sauer was a botanist and a geographer. He said that instead of putting efforts to roam and search for food from one place to other, one should domesticate plant and animals. For plant domestication, there were few conditions that should be met according to his theory. Because according to him domestication of plants and animals have an effect on the environment. Option B is the theory which is true according to him, out of the given options. Other options are incorrect.
