A limited factor in a plant population near a chemical factory is likely to be

A limited factor in a plant population near a chemical factory is likely to be pH. Chemical factories can release pollutants into the environment, which can affect the pH of the surrounding soil and water. Many plants have specific pH requirements for optimal growth, and if the pH is too high or too low, it can limit the availability of certain nutrients, such as phosphorus and iron, which are essential for plant growth. In addition, high or low pH can also directly damage plant tissues and affect their ability to take up water and other nutrients. While light, humidity, and wind are also important factors for plant growth, they are less likely to be limited near a chemical factory unless the pollutants directly affect these factors.