(B) 2, 1, 19 ... is the answer
Answer: Parasites
Explanation:
Both tapeworms and lice depend on a living host to survive. The relationship between the parasite, tapeworm or lice, isn't mutual. The parasite only benefits from the relationship, because the host provides them with plenty of nutrients. In some cases, tapeworms and lice can carry diseases and infect the host. So, there is your answer and goodluck!
I think that it is Lung cancer that is mainly caused by tobacco
Makes and are.
Both of these words are plural because that's what we are referring to (pears <u>and</u> cheese, worker<u>s</u>).