They claim that that rainforests 50 years ago covered 14 % of the world's land surface, now only cover 5 – 7 %, and that all tropical forests will be gone by the middle of the 21st century.

The middle 50 % of entering SAT scores are 740 – 800 ( out of 800 ) in mathematics, 690 – 760 in critical reading, and 680 – 760 in writing.

They discovered that CFC molecules were stable enough to remain in the atmosphere until they got up into the middle of the stratosphere where they would finally ( after an average of 50 – 100 years for two common CFCs ) be broken down by ultraviolet radiation releasing a chlorine atom.

When it was first discovered, scientists estimated that the largest Quetzalcoatlus fossils came from an individual with a wingspan as large as 15. 9 meters ( 52. 2 feet ), choosing the middle of three extrapolations from the proportions of other pterosaurs that gave an estimate of 11, 15. 5 and 21 meters respectively ( 36 feet, 50. 85 feet, 68. 9 feet ).

In the early 18th century about 50 percent of the populace, especially the gentry and middle class, were German-speaking Protestants, while the other 50 percent were Polish speaking Roman Catholics.

In the late 1930s, more than 50, 000 whales were killed annually and by the middle of the century whale stocks were not being replenished.

East Hemisphere in 50, in the middle of the 1st century.

Lengths with order of magnitude 1e17m: yellow Vernal Point arrow traces hundred light year radius circle with smaller ten light year circle at right ; globular cluster Messier 5 in background ; 12 light year radius Orion Nebula middle right ; 50 light year wide view of the Carina Nebula bottom left ; Pleiades cluster and Bubble nebula with similar diameters each around 10 light years bottom right ; grey arrows show distances from Sun to stars Aldebaran ( 65 light years ) and Vega ( 25 light years ).

Economically, however, the majority of Perot voters ( 57 %) were middle class, earning between $ 15, 000 and $ 49, 000 annually, with the bulk of the remainder drawing from the upper middle class ( 29 % earning more than $ 50, 000 annually ).

" The Occupational Outlook Handbook report that the median annual wage for news analysts, reporters, and correspondents in the United States was $ 34, 850 in May 2008, with the middle 50 percent earning between $ 25, 760 and $ 52, 160, and the bottom and top 10 percent earning less than $ 20, 180 and more than $ 77, 480, respectively.

The minor series of 1, 2 and 5 cent coins were designed by Garcilaso Rollán, the middle series of 10, 20, and 50 cent coins by Begoña Castellanos and the two major coins feature the portrait or effigy of King Juan Carlos I of Spain designed by Luis José Díaz.

The Hobbit relates how Bilbo Baggins, in comfortable middle age at 50 years old, is hired in spite of himself as a " burglar " by the wizard Gandalf and 13 dwarves led by their king Thorin Oakenshield on a quest to reclaim the Lonely Mountain and its treasure from the dragon Smaug.

The middle 50 % range of SAT I scores ( for 2005 ) was 1040 – 1310 out of 1600 possible points.

In the 17th century fleets could consist of almost a hundred ships of various sizes, but by the middle of the 18th century, ship-of-the-line design had settled on a few standard types: older two-deckers ( i. e., with two complete decks of guns firing through side ports ) of 50 guns ( which were too weak for the battle line but could be used to escort convoys ), two-deckers of between 64 and 90 guns that formed the main part of the fleet, and larger three-or even four-deckers with 98 to 140 guns that served as admirals ' command ships.

In the Upper North Street School at the time were a girls ' class on the top floor, a boys ' class on the middle floor and an infant class of about 50 students on the ground floor.

It starts at Old US 50 and travels north through the middle of town, interchanging with US 50.

In the middle of the 18th century, the fishing of herring blossomed into a full scaled industry, and the islands fishing communities flourished for some 50 years.

Average high temperatures in the summer months exceed 90 ° F ( 32 ° C ) with dewpoint temperatures in the middle to upper 70s, while average nighttime winter lows in January, the coldest month, are slightly less than 50 ° F ( 10 ° C ).

The appropriate bias current in a linear regime could be taken in the middle of the static characteristic ( 50 mA ).

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* SAT scores ( middle 50 %): 1900 – 2100

As of 2007, about 10, 000 people live in Battery Park City, most of whom are upper middle class and upper class ( 54. 0 % of households have incomes over $ 100, 000 ).

Other, more precise and robust methods have been developed For example, the truncated mean of the middle 24 % of the sample order statistics produces an estimate for x < sub > 0 </ sub > that is more efficient than using either the sample median or the full sample mean.

The truncated sample mean using the middle 24 % order statistics is about 88 % as asymptotically efficient an estimator of x < sub > 0 </ sub > as the maximum likelihood estimate.

When Newton's method is used to find the solution for the maximum likelihood estimate, the middle 24 % order statistics can be used as an initial solution for x < sub > 0 </ sub >.

Baron Bettino Ricasoli ( later Prime Minister in the Kingdom of Italy ) created the Chianti recipe of 70 % Sangiovese, 15 % Canaiolo and 15 % Malvasia bianca in the middle of the nineteenth century.

Substantively, it increased the franchise 65 % to 717, 000 with the middle class receiving most of the new votes.

The 2010 census shows that out of Shanghai's total population, 22. 0 % had a college education, double the level from 2000, while 21. 0 % had high school, 36. 5 % middle school, and 1. 35 % primary school education.

By the middle of the decade, almost 70 % of the American population had cable television and over 85 % were paying for cable services such as HBO or Showtime.

* The Hybrid vehicles market, which became somewhat popular towards the middle of the decade, underwent major advances notably typified by such cars as the Toyota Prius, Ford Escape, and the Honda Insight though by December 2010 they accounted for less than 0. 5 % of the world cars.

Midway through the 2004 season, the other teams voted to change the unpopular single lap qualifying system back to the old 1 hour format, but Stoddart voted against because it would also mean the 107 % rule being reintroduced ; this meant the change never occurred, as a unanimous vote was required to change something so significant in the middle of a season.

Ozone at middle latitudes has declined, but by a much smaller extent ( about 4 %–– 5 % decrease ).

The middle reaches are 1, 206 km ( 749 mi ) long, with a basin area of, 45. 7 % of the total, with a total elevation drop of, an average drop of 0. 074 %.

There are 30 large tributaries along the middle reaches, and the water flow is increased by 43. 5 % on this stage.

The middle reaches contribute 92 % of the river's silts.

" To prepare for the role, Bacon enrolled at a high school as a transfer student named " Ren McCormick " and studied teenagers before leaving in the middle of the day.

When the Kuomintang government abandoned Wuhan in 1939, Zhou brought Li to Chongqing, where Li was enrolled in middle school.

Quiz bowl ( or quizbowl ) is a family of games of questions and answers on all topics of human knowledge that is commonly played by students enrolled in high school or college, although some participants begin in middle or even elementary school.

Tri-Central's other notable information / achievements are: High Ability / honors instruction at all grade levels, 2012 Tri-Central High School seniors received in excess of $ 750, 000 in awards and scholar-ships, senior trip to Washington D. C. and New York City, musical productions by the school's elite choir, and instrumental performances by the schools state recognized gold rating marching band, and concert band, 8 AP classes with many students scoring 3 and above on AP exams — 10 % more than last year — ranked 13th in the state, state recognition for percentage of students enrolled in AP classes — only 35 schools recognized, state recognized academic team, Dual Credit courses as well as access to many on-line courses, 11 school-wide computer labs and 4 student computers in each elementary classroom, elementary athletic opportunities in youth soccer, cheerleading, football, basketball, and wrestling, Elementary music, art, computer technology and physical education classes each week, Accelerated reading K-12 and operation Drop Everything And Read in the secondary, and this reading program is year-round for the middle and high school.

Students from West Caldwell and Caldwell are enrolled in an elementary school based on their home location, and students attend one middle school and one high school.

The middle 40 percent range of ACT scores for the enrolled class was 26-30, with an average ACT score of 27.

Total enrollment at Cranbrook during 2007 – 08 was 1626, with 780 enrolled in the upper school, 333 in the middle schools, and 513 at the lower school Brookside.

She also enrolled at The Willows Community School, located in Culver City, California for elementary school and middle school.

Getting into the high school is virtually impossible unless previous enrolled in one of the 3 traditional program magnet middle schools, Johnson Middle ( Southwest ), Jefferson County Traditional Middle ( Middle East ) and Barret Traditional Middle ( Northeast and East ).

The middle 50 percent of enrolled students for the class of 2012 scored 24-29 on the ACT, well above the national averages.

Eberstadt and Banister report that according to North Korean statistics released in the late 1980s, primary schools enrolled 1. 49 million children in 1987 ; senior middle schools enrolled 2. 66 million that same year.

Taoyuan has 123, 000 students enrolled among its elementary schools, middle schools and high schools.

He was enrolled in the private Catholic middle and high school Cours Saint-Louis de Monceau, and then in the public Lycée ( High School ) Janson-de-Sailly, both located in Paris.

Ike attended Austin Academy middle school, then enrolled at Garland High School.

At most 18 middle school age students ( no older than 15, usually 14, but there have been students as young as 12 ) are enrolled each year.

As of now, the school has a middle school and a high school, serving students grade 6 through 12, and enrolled 839 students in 2010.