Cowsproducemuchmethane(甲烷),theworld'ssecondworstgreenhousegas,astheybreakdownthegrass.Theyarealargesourceofthegreenhousegasesthataredrivingclimatechange.Nowscientistshaveshownthepollutionfromcowscanbereducedbyaddingalittleseaweed(海藻)totheirfood.Recently,theresearchersfromtheUniversityofCaliforniastudied21cowsonafarm...
Over the five months, the scientists didn’t see any signs that the cows’ stomachs were getting used to the seaweed and starting to produce more methane again. What’s more, the cows that were led seaweed gained just as much weight as the other cows.(结果出乎意料地好。在某些情况下,...
Cows are responsible for about 40% of global methane emissions. Methane is the gas passed or belched by the world's 1.4 billion cattle. In Scotland, cattle can be found grazing on the lush green pastures. Some environmentalists believe that when it comes toglobal warming, meat, especially ...
The reference method used for research purposes is the respiration chamber, in which an individual cow is confined for several days and methane emissions are calculated from gas flow and changes in gas composition between ventilation inlet and outlet ports (Grainger et al., 2007; Yan et al., ...
During this period, samples of the gas exhaled by these cows were collected. Gas sampling was performed using evacuated PVC canisters during a period of 24 hours, and in this case, two gas samples were collected per animal as well as two samples of the background environment in which the ...
1. B, 细节理解题,根据第一段内容, One cow can release up to500 liters of methane(甲烷) each day. Cows produce more harmful gas than any other livestock (家畜).可知,对环境产生较大危害的是其他家畜,即B符合题意,故选B。2. C,细节理解题,根据第四段内容可知,He tested more than 40 kinds...
–Researchers at Utah State University are looking at ways to improve the air quality by focusing on methane gas that cows release into the air. We’ve all had to pass gas and so do cows but for them, it’s on a pretty regular basis. ...
Methane is one of the most important (in a good and bad way) greenhouse gases, and the main ingredient in what we broadly refer to as “natural gas.” We produce a massive amount of it from landfills, where naturally biodegrading materials in human garbage release a combination of methane...
Here are 28 Interesting Cow facts. 1-5 Cow Facts 1. Cows' farts +burps are more damaging towards the environment since Methane gas is 20x more powerful than CO2. Each cow releases 200-400lbs per yr methane through flatulence. French company Valorex SAS i
Cows produce much methane (甲烷) the world’s second worst greenhouse gas, as they break down the grass. They are a large source of the greenhouse gases that are driving climate change. Now scientists have shown the pollution from cows can be reduced by adding a little seaweed (海藻) to ...