Q: Answer the following question given this paragraph: Harmless fungi can be used to control pathogenic bacteria and insect pasts on crops. Fungi compete with bacteria for nutrients and space, and they parasitize insects that eat plants. Fungi reduce the need for pesticides and other toxic chemicals. Q: What reduces the need for pesticides and other toxic chemicals? A:

Available options: 1). pollen. 2). helium. 3). yeast. 4). fungi.
The answer is:
4).