An element's atomic number is the amount of protons (positively charge subatomic particle found in the atoms nucleus) present in one atom of that element.
By eating plants and other animals, because they obtain their carbon from food.
I think the correct answer from the choices listed above is option A. The condition that would lead to a small population size is a low <span>birth to death ratio. This means that more people are dying than the rate of giving birth which consequently lead to smaller number of people in an area.</span>
