What is lining up of wavelengths called?

Giving free brainliest + free points if answered correctly ! rural areas have of development. a. heavy signs b. no signs c. one type d. different types

Read the scenario below and answer the question that follows. bailey is plagued with sleep problems at least a couple of times a week. she often feels tired at work and doesn't do her best work because she is "just so tired." according to the lesson, it can be said that adults have some of the same problems with sleep that bailey does. a. few b. many c. no d. all

98 points! include an answer and in advance!