Child pornography.
Taking a photo of a minor is not a crime, if by "webcam" you are implying that they are nude. Then yes, it can fall under transmission of Child Pornography and Possession of Child Pornography.
Porn between adults over the age of majority is generally legal in Israel. Child pornography is explicitly illegal.
Yes, if they include child pornography.
Child pornography is a pictures or videos of sexual/naked photos/videos of children. It is highly illegal.
No, that would legally be child pornography.
Assuming this is under United States jurisdiction, then no. However, if you are under the age of 18, you can be charged with distribution of child pornography, and she may be charged with possession of child pornography
Not if they could be categorized as child pornography.
If you post any Child pornography or death videos yes
When you use it to do illegal things, such as download copyrighted music or obtain child pornography.
Yes, if the materials are in some way illegal (child pornography, copyright violations, etc.).
As long as there is no deliberate intention of displaying or promoting child pornography, there is no restriction.