Answer the following question given this paragraph: Many plants also produce hormones and toxins to fight pathogens. For example, willow trees, like the one in Figure below , produce salicylic acid to kill bacteria. The same compound is used in many acne products for the same reason. Q: What do willow trees produce to kill bacteria? Choices: - facultative acid - Posion - bacterial acid - salicylic acid A:
salicylic acid