Angle 7 is 65 degrees by corresponding
Answer:
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Explanation:
Early Indians: The Story of Our Ancestors and Where We Came From" looks at how and when modern humans first arrived in India; what evidence they left behind; who their descendants are today; who else followed them as migrants to this land; how and when farming started and the world's largest civilisation of its time was built; when and why this civilisation declined; and what happened next. The first modern humans arrived in India around 65,000 years ago as part of an Out of Africa migration that populated the entire world ultimately. The genetic lineage of these first migrants that the book calls ‘First Indians' still dominate the Indian population and accounts for 50-65 per cent of the Indian ancestry today.
Answer:
C. oxidation
Explanation:
Acid mine drainage occurs when acidic water flows forth from metal or coal mine. The oxidation of pyrite is one of the major causes of acid mine drainage. Sulfide is oxidized to sulfate which undergoes solubilization to Iron(II). Iron(II) is further oxidized to Ferric Iron or Iron(III). The reaction proceeds this way;
4Fe²⁺₍aq₎ + O₂₍g₎ + 4H⁺₍aq₎ ⇒ 4Fe³₍aq₎ ⁺ 2H₂O₍l₎
Ferric hydroxide, also known as Yellow boy is obtained when the pH of the acid mine rises above three. This resultant outcome of the oxidization of pyrites is detrimental to aquatic life and humans if they should consume water containing the Yellow Boy.
Sugar industry in Pakistan comprises of 78 sugar mills with an installed crushing capacity of 365,000 TCD which can produce about 31,025 tons sugar daily leading to about 5.58m tons of sugar production per crushing season of 180 days at the sucrose content of 10% with 85% efficiency where as 6.57m tons of sugar can be
<span>There are two correct answers. One is D. Frederick Law Olmsted designed the Central Park in New York City at the end of XIX century. The other correct answer is A. The city of New York slowly but surely grew upward.</span>