The structures shown below are resonance structures of sulfur dioxide. 
and 
Definitions:
Human Papillomavirus (HPV)
A group of more than 200 related viruses, some of which are sexually transmitted and can cause conditions like warts or certain cancers.
Cervix
the lower part of the uterus in the female reproductive system, connecting the uterus to the vagina.
Vulva
The external part of the female genital organs.
Major Life Stressor
Significant events or changes in one's life that require substantial psychological and emotional adaptation.
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Q86: Which phase change below is endothermic?<br>A)Deposition<br>B)Melting<br>C)Condensation<br>D)Freezing