Sentences with phrase «changes in populations over»

Some experiments were considered quirky by 19th century standards, but the work provided data supporting Darwin's notions about trait variability in a population and how natural selection drives changes in populations over time.

While local adaptation planners might be primarily be interested in how the patterns of heat extremes align with changes in population over their immediate community, it is equally important for decision makers to recognise the broader implications of heat exposure increases driven by future changes in where people live.

Not exact matches

Annual population growth Children per woman aged 15 - 49 Projected % of population over age 65 in 2030 Projected change in % of population over age 65, 2005 - 2030 Projected % of total workforce over age 65 in 2030 Projected change in % of total workforce over age 65, 2005 - 2030

The demographics are also changing: more than 400 million millennials have emerged as a driving force in consumer spending, while the country's aging population — expected to double over the next two decades — will generate new product and services demands.

The country has the world's third - largest economy, yet this may change over the next few decades as its population — the fastest aging in the world — plummets from 126 million in 2015 to 87 million in 2060.

While the program has undergone many changes over the year, including raising loan limits, the FHA has been successful in making homeownership a reality for a greater portion of the population.

Biologists define evolution as a change in the gene pool of a population over time.

One can of course not hide the fact that in the United States, too, the Christian heritage is decaying at an incessant pace, while at the same time the rapid increase in the Hispanic population and the presence of religious traditions from all over the world have changed the picture.

Evolution the fact is defined as a change in allele frequency in a population over time.

You are confusing evolution — change in inherited characteristics of a population over successive generations, with the Origin of the universe.

All the theory of evolution says is that life forms adapt to changes in the environment over time; that there are global changes in the gene pool of a given population of animals over time.

That now two - thousand years later Islam may pa - ss Christianity by pure population growth over conversions based on a change in belief is not a comparison.

A common way to use the term evolution is simply to describe the change in the gene pool of a population over time; that this occurs is an indisputable fact.

Gods will is for us humans today to evolved to a level of conciousness that will prepare us for the challenges of our future survival, Scientists now predicts of hardships in the future due to over population and changes to the natural environment.and that is happening now with activists through out the world are reminding us of protecting nature.That is why we need a phsychological revolution to hasten the evolution of consciousness that will address the problems.Ideological and philosophical enlightenment had the past great minds to develop ideas and belief because God sent them to reality in their times.Abraham, Jesus, Mohammad, Buddha, and many other religious leaders to teach humanity the doctrines that God willed to be appropriate and applicable in those periods of their existence, Also great philosophers in another dimension of social involvement were born to interprete and connect philosophically as the second element of our conscience, Kant, Marx and countless of them also were born.To complete the triangular structure or dimension of our conscience is knowledge.

Moreover, for all the uncertainties of long - term population forecasting, the likely change in size and composition of a national population can be predicted over the course of the coming calendar year with far greater certainty than can changes in the harvest, the gross national product, the unemployment rate, the foreign exchange rate, or the demand for any particular product.

If we really stop and look at the dramatic changes going on all over the world and in the US (demographics, ethnic population shifts, a new era in how people under 50 look at the world, etc.) it points to a need to focus more than ever on the centrality of Christ Jesus.

The notion that purely random mutation preserved in the population by natural selection would produce a gradual change, which over time would create the complexity of life we now observe (phyletic gradualism).

Their estimates suggest a population of over 9 billion people and a change in dietary habits, such as increased meat consumption, using more resources such as water, energy and land.

Over the last two years, scientists from the United States, the United Kingdom, and Sweden have examined projections and current data to identify ways in which the dairy industry may respond to challenges such as population growth, urbanisation, and climate change, in order to meet increased demand for dairy products over the next half centOver the last two years, scientists from the United States, the United Kingdom, and Sweden have examined projections and current data to identify ways in which the dairy industry may respond to challenges such as population growth, urbanisation, and climate change, in order to meet increased demand for dairy products over the next half centover the next half century.

The resulting data is used to compare relative abundance of seabirds over time — to help us understand populations within the sanctuary and their possible impacts on local ecosystems and as a barometer for other changes in the environment.

The increased socioeconomic inequalities in breastfeeding observed in the intervention group supports the argument that population intervention strategies could inadvertently exacerbate, rather than mitigate, socioeconomic inequalities, particularly when the intervention aims to change individual behaviours rather than targeting «upstream» structural changes.25 Our results are also compatible with an observational study from Brazil reporting that breastfeeding rates increased first among the socioeconomically better - off, followed by increases among the poor, over a 20 - year period of active breastfeeding promotion campaigns in Brazil.26

The survey also asks how they would like to see the deer population in their area change over the next few years.

With boundaries due to be shifted every five years in line with population change, these cases, by no means unusual, will become frequent all over the UK.

A growing pensioner population, primarily down to increased life expectancy coupled with only minimal changes in the retirement age, has increased costs substantially over the last decade,» he said.

Nirmala Kannankutty of the National Science Foundation's Division of Graduate Education explored similarly striking changes in the demography and size of the graduate student population, which now includes many more women and noncitizens, over the past 40 years.

Ida Kubiszewski and Robert Costanza at the Australian National University in Canberra and their colleagues gathered estimates of GPI for 17 countries — totalling more than half the world's population and GDP — and assembled them into the first - ever global picture of how GPI has changed over the years.

Viewing the thousands of tornadoes that have been reliably recorded in the U.S. over the past half century or so as a population has permitted us to ask new questions and discover new, important changes in outbreaks of these tornadoes.»

Malaspina's team was the first to show in a 2001 paper that the most important source of these rare, sporadic changes was the paternal germline (father's sperm), with advanced paternal age explaining over a quarter of the population risk for schizophrenia in an Israeli cohort.

Until now, changes in the relative proportion of rare mutations, that could be both detrimental and adaptive, had only been shown over relatively long timescales, by comparing African and European populations.

What has been called the modern synthesis of the two fields emerged in the 1940s with the idea that the sorts of genetic differences you could observe in populations, right out your window, when compounded and extrapolated over vast periods of time, could account for the large - scale changes we see in the fossil record.

«These aren't changes you can see out in the field; we're looking for trends over time in the whole population.»

To estimate changes in the size of the orangutan population over time, Voigt, along with Serge Wich from Liverpool John Moores University in the UK and their colleagues representing 38 international institutions, compiled field surveys conducted from 1999 to 2015.

Because infectious microbes reproduce quickly and have enormous populations, changes in their genetic makeup over several generations can show up in just a few days.

Eight countries in southern Asia — and a quarter of the world's population — face severe environmental and economic disruption as the climate changes over the coming decades, warns the Climate Institute, a think - tank in Washington DC.

The consequences of such initiative were disastrous: Protected from hunting for 35 years, and devoid of natural predators, the beavers grew over 5,000 times their initial population, caused irreversible changes in the forest ecosystem, and started advancing over the continent.

Climate conditions around Ardley Island have been generally favourable for penguins over the last 7,000 years and the team had expected the local population to show minor fluctuations in response to changes in climate or sea ice.

«If you look at any individual species, you can see what its population has been doing over time based on how many changes they have in their genome.

After studying population changes in 154 species of fish worldwide over 60 years, Pinsky was surprised to see marine equivalents of rabbits and mice collapsing to low levels — still shy of extinction but serious enough to disrupt ocean food chains or fishing - based societies.

The new paper stems from a National Science Foundation - funded, interuniversity research project which focuses on understanding how water sustainability in the United States has changed over the past 30 years as a result of climate change and population growth.

When combined with other surveys such as the Breeding Bird Survey, it provides a picture of how the continent's bird populations have changed in time and space over the past hundred years.

A recently published multinational study attempted to gauge the population trends of Arctic marine mammals and changes in their habitat, identify missing scientific information, and provide recommendations for the conservation of Arctic marine mammals over the next decades.

This has important implications for understanding and predicting changes in rainfall patterns over large populations across the Asia and Oceania regions.

By careful measurements of the population of two species on one tiny island over the course of major weather changes such as El Niño events and droughts, the Grants were able to show that evolutionary changes in beak size and body size can occur in as little as a couple of years.

With the advent of more and more sophisticated ways to measure genetic variation and relatedness using molecular markers, such as allozyme polymorphisms and DNA - based markers, not only can individuals be tracked as to their parentage, but changes in allele patterns over time and thus the effects of evolution on populations can be «seen» in the genetic information.

By tuning the model to replicate population data, such as the number of people at risk for developing TB and the fraction of TB patients who have drug resistance, the model can predict changes in the TB disease burden — or number of cases — over many years.

Today, evolution is defined as the change in the frequency of alleles in populations over time.

The camera trapping tells a lot about populations — like, the numbers at any point in time, densities, how those numbers are changing over time.

«Advances in genetic sequencing technologies now allow us to find patterns in large, diverse populations of microorganisms, see how they associate with specific individuals, and understand how they change over time in a way we couldn't just a few years ago,» said Knight, who leads the UC San Diego Microbiome and Microbial Sciences Initiative.

Due to the rising population and change in diet in some regions of the world over the past few decades, such as India and China, the demand for renewable resources increased and thus the pressure to produce as much food as possible.

To see whether the lab test is an accurate predictor how bees respond to heat in the real world, Hamblin used urban heat islands to mimic climate change, following bee populations at 18 places around Wake County over two years.