B) sunlight
Sunlight supports life by providing food and warmth which is needed for the population of practically anything on earth to survive
<span>Every magnet has a north pole and a south pole. Similar poles of two magnets repel each other; opposite poles attract each other.</span>
Boyle's law states that the relationship between pressure and volume of a fixed amount of gas at a fixed temperature is inversely proportional. This means that the higher the pressure, the lower the volume, in a proportional relationship. Therefore, of the statements listed, b: 'the temperature and the number of molecules must remain constant for the law to apply' and d: 'a<span>s the pressure of a gas increases, the volume decreases proportionally</span>' are correct.
The ability of an organism to maintain internal conditions is called <em>C homeostasis </em>
