Photosynthesis is vital in providing food for plants, ..

Photosynthesis [photosynthesis: The chemical change that occurs in the leaves of green plants

Measuring photosynthesis via the production of oxygen.

In 1988, the United Nations Environment Programme and the World Meteorological Association created the Intergovernmental Panel on Climate Change (IPCC) to provide a clear scientific view on climate change and its potential environmental and socio-economic impacts. In 2014, the IPCC’s Fifth Assessment Report concluded that human influence is 95 percent certain to have been the main cause of the observed warming since the mid-20th century. Those activities include fossil fuel combustion, which releases greenhouse gases into the atmosphere, as well as deforestation, which reduces the ability of the planet to absorb carbon dioxide. While a few skeptics remain, NASA’s review of multiple studies published in peer-reviewed scientific journals indicates that 97 percent or more of actively publishing climate scientists agree that climate-warming trends over the past century are very likely due to human activities.

(the concentration of dissolved oxygen is inversely related to water ..

The role of NADPH in oxygen-producing photosynthesis is to ____

absorb heat energy in the atmosphere. Without them, the earth would be a frozen, inhospitable place. Prime examples include carbon dioxide (CO2), methane, and water vapor, which trap heat much as the glass does in a manmade greenhouse. The atmospheric concentration of these gases changes the temperature of the planet through a complex mechanism known as the .

In the atmosphere, the concentration of carbon dioxide ranges from .03 to .04 %

The U.S. Geological Survey () has been measuring water for decades. Millions of measurements and analyses have been made. Some measurements, such as , , and are taken almost every time water is sampled and investigated, no matter where in the U.S. the water is being studied. Another common measurement often taken is dissolved oxygen (DO), which is a measure of how much oxygen is dissolved in the water - DO can tell us a lot about water quality.

Human activity has greatly increased the concentration of carbon dioxide in air


Photosynthesis – Plant Management in Florida Waters

Unfortunately, loss of snow and ice amplifies global warming. Snow and ice reflect sunlight back into space, which minimizes the absorption of heat by the planet. Particulate matter from dust storms, fires, and urban pollution can travel thousands of miles on wind currents and settle on snowfields, darkening them and causing them to absorb more of the sun’s energy. The heat increases melting. Bare ground and unfrozen oceans absorb even more energy. Melting permafrost emits significant amounts of methane and carbon dioxide. These positive feedback mechanisms lead to a vicious cycle of warming.

Aquatic Plants and Photosynthesis

The term refers to the amount of greenhouse gases, particularly carbon dioxide, that a person, group, or product emits. Due to our appetite for fossil fuels, the United States is the biggest producer of greenhouse gases. While Americans represent less than 5 percent of the world’s population, we emit 14 percent of the carbon dioxide–a total of 16.1 tons per capita per year. Citizens of the European Union, despite their high standard of living, produce 6.7 tons per capita per year–less than half of the carbon dioxide that Americans do.

The Discovery of Oxygen - Julian Rubin

The energy-related carbon emissions result from the generation of electric power, principally with oil, coal and natural gas; use of gasoline, diesel, and aviation fuels for transportation; and combustion of a variety of fossil fuels for heating and cooling of residential and commercial buildings and in industrial processes. The following chart shows the distribution of CO2 emissions among these energy sectors.

Oxygen is a chemical element with symbol O and atomic number 8

So how can these factors have an effect on the rate of photosynthesis? Lets start off with the light intensity. When the light intensity is poor, there is a shortage of ATP and NADPH, as these are products from the light dependent reactions. Without these products the light independent reactions can't occur as glycerate 3-phosphate cannot be reduced. Therefore a shortage of these products will limit the rate of photosynthesis. When the carbon dioxide concentration is low, the amount of glycerate 3-phosphate produced is limited as carbon dioxide is needed for its production and therefore the rate of photosynthesis is affected. Finally, many enzymes are involved during the process of photosynthesis. At low temperatures these enzymes work slower. At high temperatures the enzymes no longer work effectively. This affects the rate of the reactions in the Calvin cycle and therefore the rate of photosynthesis will be affected.