But factors such
as changes in global climate and the drifting of continents have played major roles in defining and shaping the diversity and distribution of bird species, too, the scientists say.
Continued greenhouse gas emissions at or above current rates would cause further warming and induce
many changes in the global climate system during the 21st century that would very likely be larger than those observed during the 20th century.
IPCC has failed to refute the null hypothesis that currently observed
changes in global climate indices and the physical environment are the result of natural variability.
In addition, there is a 45 - metre -(147.6 - foot --RRB- thick layer of manganese ore in the Kalahari Desert with an age corresponding to the end of the 2.4 billion - year «Snowball Earth» period; its deposition is thought to have been caused by rapid and
massive changes in global climate as the worldwide covering of ice melted.
How about those socialist nutbars in the oil companies: Shell Oil: [quote] There is now a strong scientific consensus that
recent changes in our global climate are almost certainly caused by human activity.
It's given scientists around the world critical cybertools to catalog and analyze how plants and animals have responded to
changes in global climate going back 5 million years.
The whole crux of the CO2 issue is that it crystallises our fears for the future and provides a pressure point which might force political action if CO2 can be linked to something as potentially disastrous as a runaway
unnatural change in global climate.
As
changes in the global climate alter rainfall patterns and increase the frequency and severity of droughts, a resulting rise in peatland sulfate release has severe implications for water resources and downstream ecosystems.
Moreover, the faster - than -
predicted change in global climate (Intergovernmental Panel on Climate Change, 2007) and the different available scenarios for climate change suggest an increase in aridity for the semi-arid regions of the globe and the Mediterranean region in the near future.
Development of the coal reserves of the Basin would occur at a time when the world is beginning to shift away from fossil fuels in an attempt to avoid
dangerous changes in the global climate system.
If we lose the genetic diversity these forests contain, the future security of these foods could be jeopardized, especially in the face of
unknown changes in global climate.
Ice - sheet growth, coupled with favorable changes in Earth's orbit, pushed the planet past a climatic tipping point and led to both the rapid buildup of a permanent ice sheet in the Antarctic and much
larger changes in global climate, says Hren.
«The ice shelf response to ENSO climate variability can be used as a guide to how longer -
term changes in global climate might affect ice shelves around Antarctica,» said co-author Laurie Padman, an oceanographer with Earth & Space Research, a nonprofit research company based in Seattle.
Their declaration states that because «significant
adverse changes in the global climate are now inevitable and are already taking place,» the COP15 outcome document must include, «an ambitious agreement on adaptation finance which should prioritise the needs of the most vulnerable countries, especially in the near - term...»
IPCC - Intergovernmental Panel on Climate Change 2500 of the world's leading climatologists from 70 countries Released report
on changes in global climate: Global surface temp have increased by 0.6 C during 20th century Snow & ice extent have decreased Average global sea level has risen Greenhouse gas increase is due to human activity
Continued GHG emissions at or above current rates would cause further warming and induce
many changes in the global climate system during the 21st century that would very likely be larger than those observed during the 20th century.
When we talk about climate change, we're talking about the scientifically observable — and increasingly severe —
changes in global climate patterns that became apparent in the mid-to-late twentieth century and can be attributed to the rising levels of atmospheric greenhouse gases (carbon dioxide, in particular) produced by human activities like burning fossil fuels.
It simply ignores the alternative and null hypothesis, amply supported by empirical research, that currently
observed changes in global climate indices and the physical environment are the result of natural variability.