The Earth reaches its perihelion (the point in its orbit when it is closest to the sun) during the month of January (around January 3rd currently), which falls durin â¦ g the season of winter in the northern hemisphere.
State that the most frequently occurring chemical elements in living things are carbon, hydrogen, oxygen and nitrogen. State that a variety of other elements are needed by living organisms, including sulphur, calcium , phosphorus, iron and sodium. State one role for each of the elements mentioned above. 1  Nitrogen: Required by proteins. 2  Calcium: The mineral that strengthens bone and teeth uses calcium. 3  Phosphorus: Part of the phosphate groups in ATP and DNA molecules.  Iron: found in the structure of hemoglobin and essential for the production of red blood cells.
01 Apr, 2008 Who discovered 0. Nitrogen is a chemical element with the symbol N and has an atomic number of 7. Nitrogen is a very important element for organisms and in industry.Nitrogen is a very important part of amino acids and nucleic acids (DNA and RNA).itrogen is a very important element for organisms and in industry. Nitrogen is a very important part of amino acids and nucleic acids (DNA and RNA).