Answer:
A cannot be accurately measured
Answer:
stratosphere
Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth's surface and extends up to about 50 kilo- meters (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer” (see Figure Q1-2).
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Answer:It is a 204-page illustrated book filled with incomprehensible content. Despite the name, the author is still unknown. “Voynich” is the surname of the bookseller Wilfrid Michael Voynich, who, in 1912, acquired the manuscript in rural Italy. After his death, the item ended up at Yale University, USA, where it is studied until today.
Explanation:
A net population decline resulting from an "excess of deaths over births".
Option: A
<u>Explanation</u>:
Demographic transition is a shift from higher to lower level of fertility and mortality.Rapid development in industrialization and urbanization in
century resulted into enormous population growth. But decline in early
century covered many reasons like consequences of two calamitous wars, where Europe suffered large population declination due to battle death and civilian causalities in World War I and II. Hence the acceleration of population growth in 19th century but downfall in 20th is also considered as balance.