资讯

Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of ...
*In accordance with Economic and Social Council decision 2005/213, the Commission, immediately following the closure of its fifty-seventh session, will hold the first meeting of its fifty-eighth ...
Dr. Rick Maynard, an Oxford University doctor, described the deteriorating health care infrastructure and targeting of health ...
Currently, the UN estimates the world population to be about 8.2 billion, which is projected to peak at over 10 billion by the mid-2080. However, research, published in the journal Nature ...
Gregory Smith, a senior associate director of research at Pew, told CNA this is mostly caused by Hispanics “growing as a ...
After years of political tug-of-war and prolonged delays, the much-anticipated caste census report is finally poised to be ...
The presentation of the historical document sparked ... for what it called the “problem” of providing for the “negro population.” “The question of providing for the future negro ...