Colony, cell is the answer also u can use quizlet to help you find the answers
Diaphragm...is the muscle that helps in respiration.....there are also some other but....you said flat so diaphragm !
The best example that illustrates a sensitive period is
letter b, where the child tries to learn in speaking a second language because
this is considered to be a sensitive period in which is the period for a
development of new opportunities that a child could learn in which learning to
speak a second language is considered to be a sensitive period.
