Answer:
include roots, stems, shoot buds, and leaves; they are not directly involved in sexual reproduction.
Answer: Pulmonary aortic valve
Explanation:
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.