What do the dots above the repeated notes in measure 18 mean?

Blind contour line drawings are : a. often used to paint landscapes b. often detailed but not perfect c. often detailed and flawless

Escoge uno de estos temas, escribe tu tesis y plantea 3 argumentos y 3 contraargumentos. a. control de natalidad de gatos y perros

When you shoot using the lowest number possible for your aperture what is it called