Manhole covers are deliberately heavy to prevent them being blown off by a build-up of methane gas from the sewers below.
Bacteria break down the animal waste to form methane gas.
And if Curiosity's sniffer detects methane gas, it could even imply the latter, since methane can be a byproduct of living subsurface bacteria.
This past month, there has been a flurry of news, speculation, discussion and debate concerning methane gas escaping from Arctic permafrost and its impact on the global climate system.
Beijing green source and shandong and two large farms nissan 2 and 30000 cubic meters of methane gas, respectively.
The probable cause in this case: microbes digesting oil and methane gas from the spill.
Tap water, heating, air conditioning, hot water, coal gas, liquefied petroleum gas, natural gas, methane gas, coal/charcoal products for household use;
In deep water, methane gas oxidizes into carbon dioxide before it reaches the surface.
Most, but not all. Some creatures are part of food chains that begin with methane gas which seeps from the Earth's interior in particular places, frequently at the bottom of the sea.
"In the Philippines, water hyacinth is used to make baskets. and in the United States, scientists are changing their water hyacinth and other water weeds into methane gas."
國文精選館
