The answer is the first 1. i think. :p
<span> Analyze what could have happened, and change the experimental methods to retest the hypotheses in a different way.. </span>
There are 3 sources of energy, which are also known as macronutrients ,carbohydrates, protein, and fat.
Of these three, carbohydrates are the body’s preferred source of energy. Carbohydrates break down into glucose, which is an immediate source of energy especially for the brain and muscles. The macronutrient proportions recommended for general, healthy diet are: 45-65% of energy (or calories) from carbohydrates, 10-20% of energy (or calories) from protein and 20-35% of energy (or calories) from fat.
Answer:
The part of the DNA molecule that varies among DNA molecules is nitrogenous bases.
