THE CHANGE OF POPULATION IN AMERICAN METROPOLITAN AREAS, 1950-1960First page of articledoi:10.1111/j.0033-0124.1963.024_y.xYing-Cheng KiangEastern Illinois UniversityJohn Wiley & Sons, Ltd.Professional Geographer
Neotropical migrant species that primarily use forested habitats in either wintering or breeding areas are declining, but a statistically significant association between habitat and population declines was detected only in the tropics. 展开 关键词: Population Biology ...
答案在第一段:Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. “回顾1910—1919年的美国,我们发现人们比现代人瘦,...
We estimate the size of the African American population in five-year age groups at census dates from 1930 to 1990 using a three-part strategy. For cohorts born after 1935, we follow the U.S. Census Bureau in using classical demographic analysis. To estimate the size of cohorts born before...
Until the 1980s, the American homeless population comprised mainly older males. Today, homelessness strikes much younger part of society. In fact, a 25-city survey by the U. S. Conference of Mayors in 1987 found that families with children make up the fastest growing part of the homeless ...
Until the 1980s the American homeless population was made up of mainly older males. Today homelessness strikes much younger part of society. In fact a 25-city survey by the U. S. Conference of Mayors in 1987 found that families with children make up the fastest growing part of the homeles...
Obesity in American Samoan adults in 1990 was compared to that in 1976–1978 to evaluate population changes concomitant with modernization. Body weight, stature, the body mass index (BMI), and two skinfolds were measured in 1990 in 830 males and females 25–74 years old, and were compared ...
In comparison with the adult American population today,the Americans of 1910 . A. ate more food and had more physical activities B. ate less food but had more activities C. ate less food and had less physical exercises D. had more weight problems E. [细节理解题。由第一段第四、五句可知...
Until the 1980s the American homeless population is mainly made up of older males. Today homelessness strikes much younger part of society. In fact a 25-city survey by the U. S. Conference of Mayors in 1987 found that families with children make up the fastest growing part of the homeless...
athey are arrving in chicago on july 3rd and staying therefor three days 正在翻译,请等待... [translate] aIn comparison with the adult American population today, the Americans of the 1910s 与今天成人美国人口比较,美国人二十世纪一十年代 [translate] ...