Approximately 2% (1 in 50) of all U.S. pregnancies are ectopic, and this number has been steadily increasing primarily because of increases in the incidence of pelvic inflammatory disease caused by ____ infections

Unlike the information processing approach to cognitive development, Piaget viewed development as _____

a. continuous b. discontinuous c. repetitive d. novel

Leukocytes recognize invading pathogens by their surface fragments, called antigens

Indicate whether the statement is true or false