The answer is C
Herion is a Narcotic
The answer is B, two to four weeks. A scar forms after a wound is healed. A scar is the result of a wound to the deep layer of the dermis (skin) in which collagen forms in the healing process.
Answer: C teachers must stay humble and modest regardless of their achievements Explanation: students are hesitant to approach teachers with their doubts so if teachers remain humble then the students will be more likely to come to them with their queries and doubts.
Primary and secondary behaviours
Primary behaviour: the behaviour that we wish to focus on.
Secondary behaviours include: tone of voice. body language (e.g. tossed head, folded arms, sigh, raised eyes, etc)
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I believe the answer is true, increased blood flow helps with cell turnover rate which in turn gives the appearance of a brighter- more youthful complexion. I hope this helps!