Answer: Herbicides
Step-by-step explanation:
Herbicides can be selective, that is, they can be formulated to kill only certain types of plants. Herbicides work by interrupting the growth cycle of a plant, interfering with how proteins are made, or killing cells directly. All result in the death of the plant. The action of the herbicide is highly dependent on its concentration. In weaker mixes, many herbicides can be used on crops to selectively kill weeds without harming crop plants.
Also, in agriculture and in the environment, many species are considered pest species. Most of the time we think about pests being insects. However, any species that is not wanted, not useful, or may cause problems could be considered a pest species. Pest species can be controlled with chemicals.