Misc: how many ghosts appear to scrooge in dickens's 'a christmas carol'?

Questions

Science A point to which rays of light converge is called a(n) ?

Science A shallow dish with a cover, used for science specimens is a(n) ?

Science Acetylsalicylic acid is more commonly known as ?

Science Botany and Zoology combined make up the science of ?

Science By what chemical process do plants manufacture food?