Answer : Option A) The body breaks down the molecules into molecules they need.
Explanation : Nutrient molecules are important because the body breaks the nutrient molecules and convert it into the absorb-able molecule that can generate energy for doing the activities of the body.
Nutrients are taken in the body in the form of carbohydrates which later on gets broken into glucose molecules and generates energy, proteins which is decomposed into amino acids, fats breaks down into fatty acids, minerals and salts are also nutrients which is essential nutrient for body.
Answer is: line be long 3,011·10¹³ kilometers. diametar of virus = 5·10⁻⁶ cm ÷ 100000 = 5·10⁻¹¹ km. line lenght = 5·10⁻¹¹ km · 6,023·10²³. line lenght = 3,011·10¹³ km. Avogadro number = 6,023·10²³. 1 cm = 10⁻² m = 10⁻⁵ km.
