Sentences with phrase «causing large concentrations»

Nutrients from the mangroves are dispersed to the reef by the tides causing large concentrations of feeding fish to congregate.

Not exact matches

A large concentration of flows into ETFs have led EM investors to be disproportionately exposed to mega cap and large cap stocks, causing heightened concentration risks in these segments of the market.

«In these environments that are dominated by marine plants, photosynthesis and respiration cause large differences in CO2 concentrations and the addition of anthropogenic carbon make these day - to - night differences even larger than they would be without that extra carbon,» said George Waldbusser, an Oregon State marine ecologist and co-author on the study, who serves as Pacella's Ph.D. adviser.

But at higher concentrations, and under the right conditions, melittin molecules group together into rings creating large pores in membranes, weakening a cell's protective barrier and causing the entire cell to swell and pop like a balloon.

Fogerite said a larger randomized controlled trial would be needed to determine whether yoga could be used as a prescribed treatment for individuals with moderate disability due to MS.. More than 2.3 million people — two to three times more women than men — throughout the world are diagnosed with this disease which can cause poor coordination, loss of balance, slurred speech, tremors, numbness, extreme fatigue and problems with memory and concentration.

Phillips says such concentrations are unusually large for unconfined spaces, though they are unlikely to be a health concern and are nowhere near the threshold for causing an explosion, which stands around 50,000 ppm.

Averaged over the entire globe, it's one - fourth as large as the heating caused by increasing atmospheric CO2 concentrations during the same period.

While the researchers stress that no current or planned wind farm approaches the size or concentration that would cause the slowdown effect, their results suggest the phenomenon tied to large wind farms needs to be accounted for in future planning of wind energy.

N - type semiconductor silicon is «doped» with substances that cause it to have an abundance of negatively - charged electrons; and p - type silicon is doped to have a large concentration of positively charged «holes.»

The Bacharach uses two sensors to analyze methane leaks: The first one measures natural gas concentrations in the air between 0 and 5 percent, which are caused by smaller leaks, while the second sensor measures concentrations above 5 percent that are caused by larger leaks.

A new NASA study provides space - based evidence that Earth's tropical regions were the cause of the largest annual increases in atmospheric carbon dioxide concentration seen in at least 2,000 years.

Due to the high concentration of large silver particles these products are known to cause argyria, a condition that causes the skin to turn blue - gray.

It is the high concentration of large silver particles found in silver protein products that cause argyria, a blue - gray discoloration of the skin.

While it was previously thought that only large concentrations of Xylitol could cause problems in dogs, lesser amounts of the sweetener may also be harmful.

In a 1956 study, small amounts of ammonia in air and water vapour were subjected to dogs to cause vibrant coughs or paroxysms of coughing, with larger amounts of coughing with a higher concentration of ammonia.

Unlike many compounds, heat does not reduce the efficiency of the toxin, however, the concentration of fagopyrin in food is unlikely to cause harm unless a very large amount is ingested or it is ingested on an ongoing basis.

The largest contribution to total radiative forcing is caused by the increase in the atmospheric concentration of CO2 since 1750.

There have been studies on a possible link between aspergillosis and people exposed to high concentrations of aspergillus fumigatus, which can cause it, such as those that work at large scale composting facilities and those that live nearby.

Natural, large - scale climate patterns like the PDO and El Niño - La Niña are superimposed on global warming caused by increasing concentrations of greenhouse gases and landscape changes like deforestation.

For instance, in Briffa et a 2001 they talk about trees being near altitudinal or longitudinal limits being good candidates because range is limited by temperature (not CO2 concentrations, or precip) and therefore relatively minor changes in temperature cause a relatively larger change in growth rate than trees growing in an area where conditions are more optimum.

Carbon dioxide removal addresses the root cause of climate change — high concentrations of the greenhouse gas in the atmosphere — and generally have well - understood benefits and risks, but current technologies would take decades to achieve moderate results and be cost - prohibitive at scales large enough to have a sizeable impact.

So even doubling the concentration of atmospheric carbon dioxide would only result in a very small theoretical rise in temperature, since the largest amount of the greenhouse effect caused by atmospheric CO2 has already occurred with the first 20 ppmv concentration.

In particular, the authors find fault with IPCC's conclusions relating to human activities being the primary cause of recent global warming, claiming, contrary to significant evidence that they tend to ignore, that the comparatively small influences of natural changes in solar radiation are dominating the influences of the much larger effects of changes in the atmospheric greenhouse gas concentrations on the global energy balance.

There will be some positive feedback, such that the sinusoidal CO2 concentration will be larger than in the case where CO2 does not cause temperature change.

We use a one - dimensional radiative - convective model for the atmospheric thermal structure to compute the change in the surface temperature of the earth for large assumed increases in the trace gas concentrations; doubling the N2O, CH4, and NH3 concentrations is found to cause additive increases in the surface temperature of 0.7 °, 0.3 °, and 0.1 ° K, respectively.

But pollution also covers hundreds of chemicals which are fine or even beneficial at low levels but which if released in large quantities or in problematic circumstances cause «harm» — like phosphorus (grows your veges but also leads to toxic cyanobacterial blooms which kill cattle), nitrogen (grows crops kills many native species of plants and promotes weed growth costing farmers), copper (used as an oxygen carrier by gastropods but in high concentrations kills the life in sediments which feed fish), hormones like oestrogen (essential for regulating bodies but in high concentrations confuse reproductive cycles especially with marine life) or maybe molasses from a sugar mill (good for rum but when dumped into east coast estuaries used to cause oxygen sag in estuaries leading to massive fish kills).

6 Ice age — time in the past when continental glaciers covered large parts of Earth's surface Global warming — a gradual increase in the temperature of Earth's atmosphere Greenhouse gas — Gases in the atmosphere, such as carbon dioxide, that trap solar energy Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY TERMS

7 Global Warming An increase in global temperatures due to increases in the concentrations of greenhouse gases Increased CO 2 concentrations exerts largest radiative forcing (i.e., explains bulk of temperature increase) NOT CAUSED BY STRATOSPHERIC OZONE DEPLETION

This region reflects radio waves with frequencies up to about 35 megahertz; the exact value depends on the peak amount of the electron concentration, typically 106 electrons per cubic centimetre, though with large variations caused by the sunspot cycle.

Presenting such alternative figures confuses and undermines the public understanding of the actual science, which is an understanding about the driving mechanisms of sea level rise: thermal expansion of ocean water, melting of mountain glaciers and complex dynamics of large ice sheets — in correspondence again with projected temperature rise, that is in turn a product of projected rises of greenhouse gas concentrations using calculated estimates of climate sensitivity, together creating a net disturbance in Earth's energy balance, the very root cause of anthropogenic climate change.

Gavin (correctly) points out that if a relatively small temperature change of the past century caused the observed 115 ppm change in CO2 concentration, then much larger changes in past global temperature (e.g., glacial / interglacial temperature changes) ought to have caused swings in CO2 of 500-1000 ppm.

ANF is the dominant cause of the concentration increase unless there's an equally large or larger positive natural net flux of the second type.

Even with the large enhancements in rate caused by ammonia and ions, they conclude that atmospheric concentrations of ammonia and sulphuric acid are insufficient to account for observed boundary layer nucleation.

As for the rest, I'd suggest you ask the denier to some work, and actually point out where in the article it states that global warming isn't happenning or isn't caused at least in large part by increasing greenhouse gas concentrations, and to be on the safe side (because things can be taken out of context), ask him / her to also quote the abstract and the conclusion.

EPA claims that the Global Average Surface Temperature (GAST) has been rising in a dangerous fashion over the last fifty years, in large part due to human - caused increases in atmospheric CO2 concentrations.