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Practice exercises were collapsed into larger units , reducing the number per chapter ; chapter quizzes were created from select practice exercises ; and chapter quizzes were separated from the practice exercises in the course structure to reduce student confusion . In 2006 a record 31 pandas were born in captivity in China , triple the number in 2000 . The numbers in the pending case can range . For example , an average is a convention that creates a single number to represent the collection of all the numbers in a set . The number in the address is generally changed to match the month ( example is for February ) in order to reduce the incidences of SPAM . Back to the anecdotal , I do note that my observation of the frog and salamander decline in the Adirondacks in the 1980s coincided with a determined spraying program aimed at reducing the numbers of mosquitoes and black flies that attack humans and depress the flow of summer tourist dollars . The number on the monitor that indicates the amount of oxygen in her blood starts to fall , slowly at first and then more rapidly . All of a sudden , you remember that this telephone number has changed , and you need to access the server document to change it ( remember , you do n't want to break the link by editing the number on the client document ) . The numbers of stores have decreased and retailers tend to concentrate on specific types of consumers . Animal usage broadly echoes funding levels , but the focus of research and new techniques can push the numbers in either direction . " Alltel group president of operations Kevin Beebe said that customers can change the numbers in the plan as often as they like through the company 's My Circle web site . The price of some art pieces is also recorded , and the number in stock . While those numbers were dropping , so were the numbers in divorce , teen drinking , teen suicide and abortion . Many men died while they walked , as ambulances were not able to cope with the numbers of casualties . In fact , the fewer the numbers of the human beings collected together in a place , the less crime , evil thinking , and general bad behavior will be found in it . Now , lower the number in the " Compact files when there is XXX percent wasted space " spin box . By referring to the number on the left and to the letter on the base , any point may be found to show the locality of the Union armies . The upper limit on human population numbers back then was set by the same rules that govern the numbers of all other species : Each population is limited by the environmental carrying capacity , the number of individuals that , on average , a local habitat can support , taking into account available food and nutrient resources , and other important factors , such as prevalence of predators and disease-causing microbes , and even more general factors , such as climate and rainfall .