Context: In general, a pesticide is a chemical or biological agent (such as a virus, bacterium, antimicrobial, or disinfectant) that deters, incapacitates, kills, or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusks, birds, mammals, fish, nematodes (roundworms), and microbes that destroy property, cause nuisance, or spread disease, or are disease vectors. Although pesticides have benefits, some also have drawbacks, such as potential toxicity to humans and other species. According to the Stockholm Convention on Persistent Organic Pollutants, 9 of the 12 most dangerous and persistent organic chemicals are organochlorine pesticides.

Question: What are three pests pesticides target?
Answer: plant pathogens, weeds, mollusks

Question: Are pesticides chemical or biological agents?
Answer: a pesticide is a chemical or biological agent

Question: What are possible cons of pesticides?
Answer: potential toxicity to humans and other species

Question: What are pesticides meant to prevent?
Answer: destroy property, cause nuisance, or spread disease, or are disease vectors

Question: How many microbes exist that are dangerous to humans?
Answer: Unanswerable

Question: What do nematodes do when they infect a host?
Answer: Unanswerable

Question: What is the danger of people eating some mollusks?
Answer: Unanswerable

Question: How many types of poisonous mollusks are there in the wild?
Answer: Unanswerable

Question: What does being immunized against a virus help prevent?
Answer: Unanswerable