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.
Organisms are living things. All living things share six important characteristics. All living things have a cellular organization, contain similar chemicals, use energy, respond to their surroundings, grow and develop, and reproduce. A cell is the basic unit of structure and function in an organism. Unicellular, or single-celled, organisms include bacteria, the most numerous organisms on Earth.