Holiday Weather. Less rain and more sun is the main theme during the third month of the year, and a very popular time to visit Madrid, as the fleeting spring season begins. You can expect an average temperature of around 10Â°C during March, which actually reaches a very pleasant 16Â°C on a good day, and goes down to an average low of 4Â°C in th...
The nitrogen cycle is the process by which nitrogen is converted from organic to inorganic forms; many steps are performed by microbes. Learning Objective. Key Points. Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation.
1.Nitrogen(N2) gas in the atmosphere (not in usable form) 2. bacteria in soil fixes nitrogen to be in a usable form: N2 to NH3 (ammonia) to Nitrite (NO2) to Nitrate (NO3) 3. Plants absorb Nitrates (NO3) to make proteins. 4. animals consume plants. 5. animals produce waste -- NH3 (ammonia)