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.
Paper Biology A Biology B June 02 The different ways in which organisms use ATP. How the structure of cells is related to their function. The different ways in which organisms use ATP.How the structure of cells is related to their function. Jan 03 How bacteria affect human lives.The biological importance of water. The biological importance of water.ow the structure of cells is related to their function. The different ways in which organisms use ATP. How the structure of cells is related to their function. Jan 03 How bacteria affect human lives. The biological importance of water. The biological importance of water.