Answer:
C. plagioclase
Explanation:
From the magma silicate crystals are formed successively when the magma temperature reaches the typical melting temperature for each type of crystal. The first crystals formed at high temperatures can then change their composition or dissolve again. In this way the crystals already formed contribute their ions, molecules and atoms to magma and combine again forming new crystals whose melting temperature is lower than that of the first crystals formed. The new crystals are said to be stable at the lowest temperatures set now. These processes of change are called reactions. As several successive reactions occur as the magma temperature decreases the ordered series of reactions is called the BOWEN series in honor of the Canadian scientist who formulated this concept. There are two types of reactions, the continuous reaction and the discontinuous reaction.
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By continuous reaction a crystal formed at high temperatures such as a plagioclase rich in the Ca2 +</u> component gradually varies its composition by replacing a portion of the Ca2 + ions with the Na + ions and a portion of the Al3 + ions with the Si4 + ions. To maintain its neutrality, the replacement of Ca2 + by Na + is coupled with the replacement of Al3 + by Si4 +. The series of continuous reaction starts from the plagioclase rich in Ca2 +, passes through several plagioclase of intermediate composition towards the plagioclase rich in Na +
Answer:
a)Mount Everest with highest altitude above the mean sea level at 29,029 feet
Answer:
For the most part radish seed growth is best when they are planted in cool soil; early spring or fall are the preferred seasons for many varieties. Next, be sure to get the soil in good shape before planting – loose, full of seasoned organic material, but not overly fertile. Moisture and soil depth must be right, too.
Answer:
Canada is divided into four subregions—the Atlantic, Core, and Prairie Provinces, and the Pacific Province and the Territories. Each subregion possesses unique natural resources, landforms, economic activities, and cultural life. of Canada's population is in urban areas within 100 miles of the U.S.-Canadian border.
In 1867, three colonies of British North America — Canada, Nova Scotia and New Brunswick — were united in Confederation, with the former Province of Canada being divided into Ontario and Québec.
Quebec and Ontario are often referred to as Canada's heartland, and with good reason. Three out of five Canadians live there. Ontario is the largest province in terms of population, Quebec in land area. Most of the settlement in these inland provinces is found along the Great Lakes and the St.
