populations是什么意思？

a political scientist at the University of Colorado, Boulder, who studies disaster trends, said the Forum's report was "a methodological embarrassment" because there was no way to distinguish deaths or economic losses related to human-driven global warming amid the much larger losses resulting from the growth in populations and economic development in vulnerable (易受伤害的) regions.

Among human populations, culture not only affects the way we live, but also writes itself into our genes, affecting who we are.

An individual's genetics has a big influence on their height but once you average over whole populations, genetics plays a less key role.

As such, different populations of killer whales have had to learn different hunting techniques in order to gain the upper hand over their local prey.

It can also be exploitative, especially when used with vulnerable populations.

Marine life may be affected too: El niños can reduce the rising of the cold, nutrient-rich water that supports large fish 35 populations, and the unusually warm ocean temperatures can destroy coral.

without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations.

Societies that cannot replace their populations discourage investment and innovation.

Fully developed, mature, post-industrial societies, such as those in Europe, characterised by stable or declining populations which are increasing in age

Until the early 1990s nobody much thought about whole populations getting older.

To tackle the problem of ageing populations at its root, "old" countries would have to rejuvenate (使.轻) themselves by having more of their own children

After that, a few small populations left Africa to populate the rest of the world.

As conservation areas become smaller, lions are increasingly coming into contact with human populations, which are expanding to the boundaries of these protected areas.

Demography also includes the study of non-living objects like light bulbs and taxi cabs, and buildings because these are also populations.

Globally, urban populations are expected to double in the next 40 years, and an extra 2 billion people will need new places to live, as well as services and ways to move around their cities.

It studies these populations, in the past, present and future, using quantitative data and mathematical models as tools of analysis.

It's in these populations that we begin to see real changes in the genetic makeup of natural coloring.

It's not only the study of human population, but the populations of non-human species, including viruses like influenza, the bacteria in your gut, plants that you eat, animals that you enjoy or that provide you with meat.

Most people would love to get students from more underserved populations, but they just can't get them in the door.

rising temperatures and overfishing in the pristine waters around the Antarctic could see king penguin populations pushed to the brink of extinction by the end of the century, according to a new study.

They hypothesize that language diversity must be about history cultural differences, mountains or oceans dividing populations.

What we see today is the product of evolutionary events resulting from the dispersal of a few human populations out of Africa around 60, 000 to 70, 000 years ago.