climatic

The report calls for farming to focus on crops and livestock that do "reasonably well" in a variety of environments rather than those that excel in a narrow set of climatic conditions.

It's a difficult place to live because of its climatic extremes.

The stage was set for a climatic final set piece.

Insects such as ants and termites also can be exceedingly numerous under favorable climatic and soil conditions.

Climatic conditions in New Zealand appear to have been relatively stable over the period during which moa became extinct.

The general consensus is that there was a period of climatic cooling, which had a negative effect on the availability of food.

Over time, increasing urban heat islands affect climatological temperature records, producing artificial warming in climatic records taken in cities.

Nevertheless, climatic explanations for the K-T extinction are not really challenged by the ideas that dinosaurs may have been endothermic, because even endotherms can be affected by a significant change in the climate.

This is particularly important for species that colonize an environment where there is no existing vegetation to ameliorate climatic extremes and in which there may be great climatic diversity.

The Sahara is a highly diverse, albeit dry, region that has undergone major climatic changes since 10,000 B.C.

About 3,500 B.C., climatic conditions again deteriorated.

And so, um, in response to these gradual climatic swings, some species have shifted their ranges hundreds of kilometers.

Another important push was the onset of the Little Ice Age, a climatic phenomenon that led to cooler temperatures in the Northern Hemisphere.

Climatic change (the result of global warming?) is dramatically affecting the residence times of some lakes in northwestern Ontario. Canada.

The surface-atmosphere relationships inside metropolitan areas produce a number of climatic peculiarities.

Climatic changes at the end of the glacial period 13,000 years ago have been proposed to account for the emergence of farming.

There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.

It would appear that the instability of the climatic conditions led populations that had originally been nomadic to settle down and develop a sedentary style of life, which led in turn to population growth and to the need to increase the amount of food available.

Earth had experienced previous periods of climatic change, and yet agriculture had not been developed.

The climatic changes in southwestern Asia were more subtle, in that they involved shifts in mountain snow lines, rainfall patterns, and vegetation cover.

The glacial system is governed by two basic climatic variables: precipitation and temperature.

One of the most difficult aspects of deciding whether current climatic events reveal evidence of the impact of human activities is that it is hard to get a measure of what constitutes the natural variability of the climate.

Instrumental records do not go back far enough to provide us with reliable measurements of global climatic variability on timescales longer than a century.

Although initially appealing, the hypothesis of a simple climatic change related to sea levels is insufficient to explain all the data.

Paleontologists have argued for a long time that the demise of the dinosaurs was caused by climatic alterations associated with slow changes in the positions of continents and seas resulting from plate tectonics.

Critics also point out that the shallow seaways had retreated from and advanced on the continents numerous times during the Mesozoic, so why did the dinosaurs survive the climatic changes associated with the earlier fluctuations but not with this one?

In some regions, the increase in desert areas is occurring largely as the result of a trend toward drier climatic conditions.