Sentences with phrase «dioxide are at their highest levels»

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We know that the surface temperature worldwide is rapidly increasing, that the carbon dioxide levels in the atmosphere are at their highest levels in at least 200,000 years.

Levels of nitrogen dioxide, which is linked to premature deaths and respiratory problems, were found at extremely high levels on roads connecting to the site of Johnson's planned Silvertown river crossing between East and SE LLevels of nitrogen dioxide, which is linked to premature deaths and respiratory problems, were found at extremely high levels on roads connecting to the site of Johnson's planned Silvertown river crossing between East and SE Llevels on roads connecting to the site of Johnson's planned Silvertown river crossing between East and SE London.

The amount of carbon dioxide (CO2) in the air is now at its highest level in human history, largely because of coal - burning power plants and vehicle emissions.

Using spectral readings from telescopes at the Keck Observatory in Hawaii, Hand has found high levels of oxidative chemicals such as sulfate, oxygen, sulfur dioxide and hydrogen peroxide on Europa's surface, which are produced as ionizing radiation from Jupiter scours it, splitting apart water molecules and sulfur compounds in the uppermost layers of its ice.

To find out if how the nitrogen is delivered makes a difference, Arnold Bloom, a crop physiologist at the University of California, Davis, and his team monitored the growth of wheat plants raised in high levels of carbon dioxide.

Dr Tina Van De Flierdt, co-author from the Department of Earth Science and Engineering at Imperial College London, says: «The Pliocene Epoch had temperatures that were two or three degrees higher than today and similar atmospheric carbon dioxide levels to today.

Researchers at the University of Gothenburg have now revealed that the concentration of nitrogen in plants» tissue is lower in air with high levels of carbon dioxide, regardless of whether or not the plants» growth is stimulated.

«Modern atmospheric carbon dioxide levels are today equivalent to those about three million years ago, when sea level was at least six meters higher because the ice sheets were greatly reduced.

«Atmospheric CO2 is not a pollutant, it is in fact the very elixir of life,» Craig Idso, a science adviser to the CO2 Coalition, said during a panel discussion at CPAC exploring the benefits attached to higher levels of carbon dioxide in the atmosphere.

Asthmatics are particularly susceptible to sulphur dioxide, and the level of free sulphur dioxide in most wines at bottling is definitely high enough to trigger a reaction.

, «Apples not intended for fresh market are stored at low temperatures, with low levels of oxygen and high levels of carbon dioxide.

Carbon dioxide levels, for example, are at an all - time high of more than 400 parts per million — more than double the amount during the ice ages.

Climate Change Surprise: High Carbon Dioxide Levels Can Retard Plant Growth, Study Reveals The prevailing view among scientists is that global climate change may prove beneficial to many farmers and foresters — at least in the short term.

Specimens of elkhorn coral living in water with excess carbon dioxide have been studied for fertilization rates, ability of larvae to settle on reef substrate (where they produce new corals), and subsequent growth and survival.3 Three levels of carbon dioxide were tested, corresponding to concentrations today, at mid-century, and at the end of the century on a high - emissions path.3, 5 At the mid-century concentration, the ability of fertilization to occur and for larvae to settle successfully on the reef was significantly reduced: around 52 percent, and the decline intensified to about 73 percent at the late - century concentration.3 The corals» ability to survive over the long run declined as well, by an average of 39 percent and 50 percent respectively.3,at mid-century, and at the end of the century on a high - emissions path.3, 5 At the mid-century concentration, the ability of fertilization to occur and for larvae to settle successfully on the reef was significantly reduced: around 52 percent, and the decline intensified to about 73 percent at the late - century concentration.3 The corals» ability to survive over the long run declined as well, by an average of 39 percent and 50 percent respectively.3,at the end of the century on a high - emissions path.3, 5 At the mid-century concentration, the ability of fertilization to occur and for larvae to settle successfully on the reef was significantly reduced: around 52 percent, and the decline intensified to about 73 percent at the late - century concentration.3 The corals» ability to survive over the long run declined as well, by an average of 39 percent and 50 percent respectively.3,At the mid-century concentration, the ability of fertilization to occur and for larvae to settle successfully on the reef was significantly reduced: around 52 percent, and the decline intensified to about 73 percent at the late - century concentration.3 The corals» ability to survive over the long run declined as well, by an average of 39 percent and 50 percent respectively.3,at the late - century concentration.3 The corals» ability to survive over the long run declined as well, by an average of 39 percent and 50 percent respectively.3, 4

The increased levels of carbon dioxide in the atmosphere — now higher than at any time in at least the past few million years — can be found as fossil bubbles in the geologically short - lived «rock» that is polar ice.

According to Kenneth Miller, lead author and Earth Science professor at Rutgers University, «the natural state of the earth with present carbon dioxide levels is one with sea levels about 20 meters higher than at present.»

Carbon dioxide in the Earth's atmosphere, which contributes heavily to human - induced global warming, is now at its highest level in the past 800,000 years, according to scientists.

The levels of carbon dioxide in the atmosphere today are higher than they have been at any time in the past 3 - 5 million years, and in 2013, CO2 levels surpassed 400 parts per million (ppm) for the first time in recorded history.

At 380 parts - per - million, atmospheric carbon dioxide levels are at the level highest in 650,000 yearAt 380 parts - per - million, atmospheric carbon dioxide levels are at the level highest in 650,000 yearat the level highest in 650,000 years.

Carbon dioxide level highest in 650,000 years Carbon dioxide level highest in 650,000 years mongabay.com November 24, 2005 Carbon dioxide levels are now 27 percent higher than at any point...

Higher levels of carbon dioxide in the atmosphere also mean that wheat, rice, maize, potatoes and other staples will grow with lower levels of protein — and by 2050, an extra 150 million people in 47 countries will be at greater risk of malnutrition.

Recent studies have separately warned that high levels of carbon dioxide, or CO ₂, make crops less nutritious for reasons that are not totally clear, and put shellfish and other key parts of the food chain at risk by making oceans more acidic.

German emissions are thus at approximately the same level as they were in 2009 — an amount that is 150 million tonnes (carbon dioxide - equivalent) higher than the country's 2020 climate target, which was abandoned in 2017.

At present, carbon dioxide levels are dramatically higher than normal due to man - made emissions.

Increased weed and pest pressure associated with longer growing seasons and warmer winters will be an increasingly important challenge; there are already examples of earlier arrival and increased populations of some insect pests such as corn earworm.64 Furthermore, many of the most aggressive weeds, such as kudzu, benefit more than crop plants from higher atmospheric carbon dioxide, and become more resistant to herbicide control.72 Many weeds respond better than most cash crops to increasing carbon dioxide concentrations, particularly «invasive» weeds with the so - called C3 photosynthetic pathway, and with rapid and expansive growth patterns, including large allocations of below - ground biomass, such as roots.73 Research also suggests that glyphosate (for example, Roundup), the most widely - used herbicide in the United States, loses its efficacy on weeds grown at the increased carbon dioxide levels likely to occur in the coming decades.74 To date, all weed / crop competition studies where the photosynthetic pathway is the same for both species favor weed growth over crop growth as carbon dioxide is increased.72

Carbon dioxide — the gas scientists say is most responsible for global warming — reached its highest level in recorded history last month, at 410 parts per million.

The former coal plants accounted for the bulk of the negative health impacts, due for example to their much greater size and higher levels of sulphur dioxide emissions, which were largely linked to continued coal burning at co-fired sites.

Atmospheric carbon dioxide is now at its highest level in at least three million years, primarily as a result of the burning of fossil fuels.

Carbon dioxide emissions during the Eemian and Pliocene era are an analog for today's levels, but sea levels at that time were higher than today.

While we don't know sea level rise in the 21st century, in the long run, sea level was 50 m higher at atmospheric CO2 level of 2x prehistoric (note: we're adding greenhouse gases in addition to carbon dioxide).

Your argument is that we can't pick the future at all (with which I agree)-- so we should just keep increasing carbon dioxide (already at levels not seen in 10 to 15 millions years) relentlessly higher?

The carbon they refer to is Carbon dioxide, / CO2 a gaseous product of the burning of practically any combustible product of this planet and a gas which if the planet lacked or was not present at a sufficiently high atmospheric level and had remained so for countless millenniums past, no sentient life or plant life would exist today.

Levels of carbon dioxide are the highest they have been in three million years, leading researchers to look at sea level rise at that time.

2) Current levels of the greenhouse gases carbon dioxide and methane in the atmosphere are higher now than at any time in the past 650,000 years.

Sophie says: «In our civil rights case, titled Juliana, et al. v. United States, et al. and available at ourchildrenstrust.org, we assert that the government is violating our constitutional right to life, liberty and property by approving emissions of fatally high levels of carbon dioxide into the atmosphere, despite being aware of its damaging effects.

«Modern - day levels of carbon dioxide were last reached about 15 million years ago,» Tripati says, when sea levels were at least 25 meters higher and temperatures were at least 3 degrees C warmer on average.

Dr. Patrick J. Michaels, a senior fellow in environmental studies at the Cato Institute, the libertarian research group based in Washington that is skeptical that global warming will cause serious environmental harm, pointed out that carbon dioxide levels in the atmosphere had been higher for 90 million of the last 100 million years.

In primeval times, the amount of carbon dioxide was ten times higher than today's levels — at the same time there was an explosion of flora and fauna.

The mid-Cretaceous was characterized by geography and an ocean circulation that was vastly different from today; as well as higher carbon dioxide levels (at least 2 to 4 times higher than today).

Now that the carbon dioxide - temperature relationship was becoming well - understood, attention was turned to these «hothouse» periods of the past, and evidence began to accumulate that carbon dioxide levels had indeed been much higher at these times.

The climate was hot and dry, with atmospheric carbon dioxide levels sitting at about 2,000 parts per million (ppm)-- far higher than our current level of about 405 ppm.