While it took the global population 12 years to grow from 7 to 8 billion, it will take approximately 15 years — until 2037 — for it to reach 9 billion, a sign that the overall growth rate of the global population is slowing. 全球最多会有多少人? 约104亿。根据联合国最新预测,到本世纪...
yaji cultural salon. it has advanced cultural and tourism exchanges under the belt and road initiative, carried out the cultural silk road program, and established the silk road international theater, museum, art festival, library, and art...
Many ecologists now think that the relativelong-term stability of climax communities comes not from diversity but from the“patchiness” of the environment, an environment that varies from place to placesupports more kinds of organisms than an environment that is uniform. A localpopulation that goes...
4a, where the slopes between NPD and DMR were approximately steady (Fig. 4d). This relative stability may be indicative of an equilibrium state that follows the evolution from frontier to cities illustrated in Fig. 2a. For example, by 1850 the New England settlements of HUC 1 had already ...
Mood disorders (i.e., major depressive disorder or bipolar disorder) are among the most common mental illnesses with lifetime prevalence rates in the general population ranging from 1–6% for bipolar disorder [4, 5] to approximately 10% for major depressive disorder [6]. In 2019, 280 ...
approximately 54,000 women lose their jobs annually due to pregnancy discrimination. Over 2.2 million women of childbearing age cannot access maternity care. At least 21 states have enacted bans or strict restrictions on abortion. Maternal mortality has more than doubled in the past two decades. ...
Participants’ parents provided reports of their child’s social functioning at that time and approximately two years later.“As we suspected, children who displayed less positive facial expressions in response to pleasant images when sleep was restricted were reported to have more social problems two...
Did you know that Americans have approximately three times the amount of space we have fifty years ago? Therefore, you’d think we’d have sufficient room for all of our possessions. However, that’s not the case. We’ve got triple the space, but we’ve become such1consumers that we ...
population is married (92.07%), 91.59% are not members of the Communist Party, and 56.4% have an education level of primary and secondary school or below. According to the 2017 China Demographic Yearbook, the male to female ratio of the elderly population is approximately 4:6 [46]. ...
This study shows that conserving approximately half of global land area through protection or sustainable management could provide 90% of ten of nature’s contributions to people and could meet representation targets for 26,709 species of mammals, birds, amphibians, and reptiles. This finding supports...