Which of the following is NOT a way that weeds spread?

Weeds spread through various natural mechanisms, including wind, water, and animals. Wind disperses seeds over long distances, allowing weeds to colonize new areas quickly. Water can carry seeds and plant fragments to new locations, particularly in flood-prone areas or water bodies, facilitating weed spread in aquatic systems. Animals contribute to weed dispersal by either consuming seeds and excreting them in different locations or by carrying seeds on their fur or feathers.

Fire, while capable of affecting vegetation and ecosystems, does not directly facilitate the spread of weeds. Instead, fire often creates conditions that may allow weeds to emerge more readily after a burn, but it does not actively disperse weed seeds. Therefore, the influence of fire on weed distribution is indirect, making it the option that does not represent a method of weed spread.