By 2050, the human population will probably be larger by 2 to 4 billion people, more slowly growing (declining in the more developed regions), more urban, especially in less developed regions, and older than in the 20th century. Two major demographic uncertainties in the next 50 years ...
By 2050, the human population will probably be larger by 2 to 4 billion people, more slowly growing (declining in the more developed regions), more urban, especially in less developed regions, and older than in the 20th century. Two major demographic uncertainties in the next 50 years concern...
Nowin the world people are living longer.Studies show the average age ofthe human population is rising.By the year of 2050, about two billionpeople will be 60 or even older.Andthe number of people who are 80 years old or over will reach 395million. TheWHO says the governments must prepa...
Earth is rapidly being urbanized, with 70% of the human population expected to live in cities by 20501. Urban ecosystems provide major benefits to people, such as promoting social development and living convenience. However, high population densities in cities cause environmental impacts, such as ...
Ecological engineering may help us understand the causes of human population growth and impacts on environmental resources. In the coming decades, the survival of humans and the security of environmental resources that support human existence will continue to be threatened by rapid population growth. ...
Of all the threats to human society, including war, disease and natural disaster, one outranks all others. It is the aging of the human population. The 1) of people aged 60-plus around the world is 2) to more than double in 2050. By 2047, for the first time in human history, the...
CHANGING DEMOGRAPHICS: Why an Ageing Population Is the Greatest Threat to Society ; by 2050, for the First Time in Human History, Old People Will Outnumber Children on the Planet
故选 A 。 [难句解读】The World Economic Forum predicts the global population will hit 9. 8 billion by 2050, which means we might need to grow as much as double the amount of food we do today and do it without significantly consuming limited resources such as land and water. 分析:本句...
(MAGs)25,26to perform a comprehensive population-level study of ARGs in the human gut microbiome. We build on previous analyses both in terms of scale and by more carefully attributing the response to antibiotic consumption to different types of ARGs, species-specific or mobile, and by ...
Demographic changes occurring across the European Union mean that, by 2050, the population aged 65 years or more will increase to almost 130 million [1] (p. 16). By 2070, it is estimated that 30% of the European population will be aged 65 or more, up from approximately 20% currently,...