How is the activity of nitrogenase regulated?

Feb 7, 2021 ... Nitrogen (78.08%) · Oxygen (20.95%) · Argon (0.934%) · Carbon Dioxide (415ppm) · Neon (18.18ppm) · Helium (5240ppb) · Methane (1187ppb) ... ... atmosphere from the soil, volcanic vents, fumaroles, and hydrothermal systems. By far the most abundant volcanic gas is water vapor, which is harmless. Jun 16, 2011 ... ... most abundant element in the Universe. ... It is significant that so much carbon dioxide stays in the atmosphere because CO2 is the most important ... Today's crossword puzzle clue is a quick one: Third-most abundant gas in the atmosphere. We will try to find the right answer to this particular crossword clue. Sep 27, 2017 ... Although the atmosphere is mostly made up of nitrogen, it is in the form of a gas known as dinitrogen N2. Plants cannot use this form ... ... atmosphere, and consequently most of the clouds and stormy weather. Vertical ... Thus, water vapor is the third or fourth most abundant gas in surface air. Nitrogen is the most abundant in the atmosphere amounting to about 78%. The seconds most abundant is oxygen at approximately 21%. ... atmosphere. Carbon is the fourth most abundant element in the universe. With its ability to form complex molecules such as DNA and proteins, carbon makes ... Dec 1, 1997 ... ... atmosphere. Surprisingly, the two most abundant gases -- nitrogen and oxygen -- turned out to have no heat-trapping ability. Ninety-nine ... The predominant gas is carbon dioxide, making up 95.9 percent of the atmosphere's volume. The next four most abundant gases are argon, nitrogen, oxygen and ...