Identify the productions of the phrase-structure grammar for each of these languages, where S is the starting symbol.

Which of these sentences has an error in subject-verb agreement? a. official procedures calls for students who are tardy three times to serve detention. b. as a result of her efforts, a team of volunteers signs up every month to clean the city's parks. c. the committee of parents protested loudly at the school board meeting. d. each of the neighbors brings a dish to share at the pot-luck gathering.

Aspot in middle of the retina that only contains cones is called the

What do technical writers need to do when using an image?