A carcinogen isan agent with the capacity to cause cancer in humans. Carcinogens may be natural, such as aflatoxin, which is produced by a fungus and sometimes found on stored grains, or manmade, such as asbestos or tobacco smoke. Carcinogens work by interacting with a cell's DNA and induc...
Nylon and other polyamides are naturally unsustainable and environmentally degrading, but the production processes that are used to make these fabrics also damage the ecosystem. For instance, the water that is used to cool polyamides often introduces pollutants into the ecosystems surrounding manufacturing...
Methane is a greenhouse gas that is produced naturally by a wide range of bacteria as they perform anaerobic respiration. This gas is produced at the... Learn more about this topic: Koppen Climate Classification System, Zones & Map from ...
Nitrous oxide(N2O) is another important greenhouse gas. Although the amounts being released by human activities are not as great as the amounts of CO2, nitrous oxide absorbs much more energy than CO2 (about 270 times as much). For this reason, efforts to curb greenhouse gas emissions have ...
Nitrous oxide(N2O) is another important greenhouse gas. Although the amounts being released by human activities are not as great as the amounts of CO2, nitrous oxide absorbs much more energy than CO2 (about 270 times as much). For this reason, efforts to curb greenhouse gas emissions have ...
Carbon dioxide is a naturally occurring greenhouse gas. Others include water vapor, methane and nitrous oxide. These gases help keep the Earth warm by absorbing the sun's energy and by redirecting energy back to the Earth's surface. An increase in the amount of carbon dioxide creates an overa...
[42]. However, in the context of tumorigenesis, TGF-beta carries the capacity to serve as a potent promoter of tumorigenesis and as a mediator for the recruitment of immunosuppressive cell populations. TGF-beta is overproduced by most tumors, including by prostate cancer cells, with contributions...
Litter quality may deteriorate with resultant implications for health and welfare, and there are risks of leaching of nitrate to soil and ground water and increased emissions of nitrous oxide and ammonia from storage and spreading of manure. Dietary imbalances may cause stress in laying hens, which...
“There is the emissions side that comes partly from fossil fuel use and partly from things like nitrous oxide and methane emissions,” she said. “The other side is looking at the soil globally as a key resource. Right now, a lot of agricultural soil is a net emitter of carbon dioxide...
All told, each year’s emissions of methane and nitrous oxide are the equivalent of more than 7 billion tons of carbon dioxide, or more than 80 percent of all the greenhouse gases in this ag/forestry/land use sector. The global population is headed toward 10 billion people by 2100, and ...