Sentences with phrase «changes in the carbon dioxide level»

Changes in carbon dioxide levels may make it easier for new plants to take over the landscape, such as more shrubs growing in the Arctic.

Changes in carbon dioxide levels may not have a direct impact, but related «feedback

«Such a change in the carbon dioxide level might, therefore, produce major consequences on the climate — possibly even triggering catastrophic effects such as have occurred from time to time in the past,» Hornig said.

When there is evidence for the growth of a large ice sheet on Antarctica or on Greenland or the growth of sea ice in the Arctic Ocean, we see evidence for a dramatic change in carbon dioxide levels over the last 20 million years.

He said that «changes in the carbon dioxide level [of the atmosphere] are a result of changes in temperature, not a cause.»

The first of these concerns the terrestrial and oceanic processes that release greenhouse gases into the atmosphere and then absorb them, and the second is a calculation about what a change in carbon dioxide levels really means for average global temperatures.

«It is clear that climate change is a scam -LSB-...] changes in the carbon dioxide level [of the atmosphere] are a result of changes in temperature, not a cause.»

«Here are more undeniable facts proven by data: firstly, changes in the carbon dioxide level are a result of changes in temperature, not a cause.

Not exact matches

In animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDIn animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDIn human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDin autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDS.

The researchers examined the sensitivity of soil water change to varying levels of carbon dioxide, finding a significant positive change in soil water along the carbon dioxide enrichment gradient.

The indirect effects of rising atmospheric carbon dioxide (CO2) levels, such as changes in soil moisture and plant structure, can have a bigger impact on ecosystems than previously thought.

E. coli cells will be genetically engineered to change color in response to conditions under study: carbon dioxide levels, atmospheric pollutants and pathogens, for example.

Research published in Science found that increased levels of carbon dioxide in the atmosphere cause soil microbes to produce more carbon dioxide, accelerating climate change.

Research published in Science today found that increased levels of carbon dioxide in the atmosphere cause soil microbes to produce more carbon dioxide, accelerating climate change.

A new climate change modeling tool developed by scientists at Indiana University, Princeton University and the National Oceanographic and Atmospheric Administration finds that carbon dioxide removal from the atmosphere owing to greater plant growth from rising CO2 levels will be partially offset by changes in the activity of soil microbes that derive their energy from plant root growth.

«Some people believe a change in the level of atmospheric carbon dioxide may have played a role.

The centre runs research programmes in climate variability and change, the monitoring of sea levels, ocean uptake of carbon dioxide, and Antarctic marine ecosystems.

The research focused on a time that marked a change between a period of high carbon - dioxide levels in the atmosphere similar to modern day and much lower levels similar to the period before the industrial revolution, Pullen said.

In essence, the scientists evaluated the impacts associated with a given final level of carbon dioxide in the atmosphere, but did so through the lens of temperature changIn essence, the scientists evaluated the impacts associated with a given final level of carbon dioxide in the atmosphere, but did so through the lens of temperature changin the atmosphere, but did so through the lens of temperature change.

From a quarter to half of Earth's vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.

Ward is working to determine how plants have evolved in response to changing carbon dioxide levels over geologic and contemporary time scales.

Given that trees play a key role in keeping carbon dioxide levels in check, widespread die - offs could exacerbate the climate change that caused them — and render the Southwest's terrain even more desolate.

After the Geneva meeting, he claimed that Pearce's work shows that a doubling of carbon dioxide levels in the atmosphere by the middle of the next century would cause damage from climate change valued at between 1.5 and 2 per cent of «gross world product».

By analyzing boron in shells accumulated over more than 2 million years, Hönisch was able to reconstruct in unprecedented detail how atmospheric carbon dioxide levels have changed over time.

For example, a large body of research has found switching to an entirely vegetarian diet would make a huge difference on the carbon footprint of our food system — the Climate Change, Agriculture and Food Security research program reports that if the global population were to reduce or cut its meat intake, it would halve the cost of mitigation actions needed to stabilize carbon dioxide levels to 450 parts per million by midcentury — but for many people that is not in the cards.

OCO - 2's spectrometers can detect changes of one or two carbon dioxide molecules out of the 400 — an unprecedented level of precision, and one that scientists think will be adequate to detect changes in natural sources and sinks, once enough measurements have been collected.

The study, published in Nature Climate Change, examined how baby salmon respond to fresh and ocean water with the levels of carbon dioxide expected 100 years in the future.

To allay concerns regarding pollution, the U.S. cement industry has voluntarily pledged by 2020 to reduce total carbon dioxide emissions from its plants to 10 percent below 1990 levels by upgrading manufacturing equipment and changing the ingredients in the finished product.

By studying the relationship between CO2 levels and climate change during a warmer period in Earth's history, the scientists have been able to estimate how the climate will respond to increasing levels of carbon dioxide, a parameter known as «climate sensitivity».

The finding suggests that sea life is already being affected by changes in the ocean's chemistry caused by rising carbon dioxide levels.

Climate Change: The Last Great Global Warming (p 56) The levels of carbon dioxide release and current speed of warming across the globe could lead to extinctions on a scale worse than previously thought, an article in this month's Scientific American suggests.

Higher carbon dioxide levels change the concentration of ions (electrically charged atoms and molecules) in the fishes» blood, altering the way that the neuroreceptors work.

To investigate if this would affect social recognition in fish, schools were kept under elevated levels of carbon dioxide, similar to those projected for 2100 by models produced by the Intergovernmental Panel on Climate Change (IPCC).

Under the Climate Change Convention, which holds its first formal meeting in Berlin in March, they are all required to reduce their carbon dioxide emissions to 1990 levels by the year 2000.

Then they ramped up levels of CO2 to see how the algae would respond to the resulting warming, the extra carbon dioxide itself, and changes in sea ice.

Now in its 25th year, the report pulls together hundreds of scientists from dozens of countries to piece together the changes from the previous year in all aspects of the Earth's climate — from carbon dioxide levels to the planet's rising temperature, from glacier melt to change in soil moisture — and puts them in the context of decades - long trends.

If the folks at Guinness World Records kept tabs on climate change, they'd be taking note that the planet has hit a milestone: levels of heat - trapping carbon dioxide in the atmosphere have averaged more than 400 parts per million each day for the entire month of April.

NASA will hold a media teleconference at 11 a.m. PDT (2 p.m. EDT) Thursday, Oct. 12, to discuss new research to be published this week on changing global levels of carbon dioxide in the atmosphere.

Our comprehensive UK plant collections are also being used to document changes in response to increasing carbon dioxide levels and warming.

These videos produced by Plymouth Marine Laboratory provide information about ocean acidification and raises awareness of the implications associated with increasing levels of carbon dioxide and changes in seawater pH levels.

A team led by geochemist Dr. Katharina Pahnke from Oldenburg has discovered important evidence that the rise in atmospheric carbon dioxide levels at the end of the last ice age was triggered by changes in the Antarctic Ocean.

Both papers found the observed differences in CO2 bands matching the expected changes from rising carbon dioxide levels.

A massive expansion of land use for sugar cane growth in Brazil, and a subsequent increase in ethanol production with the feedstock could reduce global carbon dioxide emissions in the transportation sector by up to 86 percent of 2014 levels, according to research published in the October issue of the journal Nature Climate Change.

«For one thing, climate change and rising carbon dioxide levels have created an environment that's more hospitable to the growth of allergens such as mold,» says Jay Portnoy, MD, director of allergy, asthma and immunology at Children's Mercy Hospital in Kansas City, Mo. «What's more, we're living in cleaner indoor environments these days, so our immune systems go into overdrive when we're exposed to something unfamiliar, like dust mites or fur.»

Writing Task The Lesson Level Learning Goal for this task is: Construct and present an oral and written argument supported by empirical evidence and scientific reasoning to support the claim that activities such as deforestation or reforestation can cause changes in the carbon dioxide in the atmosphere.

However, this in itself is not enough to define what level of warming is «dangerous,» especially since the projections of actual impacts for any level of warming are highly uncertain, and depend on further factors such as how quickly these levels are reached (so how long ecosystems and society have had to respond), and what other changes are associated with them (eg: carbon dioxide concentration, since this affects plant photosynthesis and water use efficiency, and ocean acidification).

There is a potent sense in which this is true: once a change has happened it can not be made not to have happened; once they have risen, neither carbon - dioxide concentrations nor sea levels can be made not to have risen.

Ocean acidification could devastate coral reefs and other marine ecosystems even if atmospheric carbon dioxide stabilizes at 450 ppm, a level well below that of many climate change forecasts, report chemical oceanographers Long Cao and Ken Caldeira of the Carnegie Institution's Department of Global Ecology in the journal Geophysical Research Letters.

- carbon dioxide has increased a mere 60 parts per million since 1957, a tiny change in the composition of the atmosphere; increased levels of CO2 act a fertilizer, promoting plant growth and contributing to the shrinking of the Sahara desert

I reached out to Pierrehumbert because he is one of many authors of «Consequences of twenty - first - century policy for multi-millennial climate and sea - level change,» an important new Nature Climate Change analysis reinforcing past work showing a very, very, very long impact (tens of millenniums) on the Earth system — climatic, coastal and otherwise — from the carbon dioxide buildup driven by the conversion, in our lifetimes, of vast amounts of fossil fuels into useful echange,» an important new Nature Climate Change analysis reinforcing past work showing a very, very, very long impact (tens of millenniums) on the Earth system — climatic, coastal and otherwise — from the carbon dioxide buildup driven by the conversion, in our lifetimes, of vast amounts of fossil fuels into useful eChange analysis reinforcing past work showing a very, very, very long impact (tens of millenniums) on the Earth system — climatic, coastal and otherwise — from the carbon dioxide buildup driven by the conversion, in our lifetimes, of vast amounts of fossil fuels into useful energy.