Sperm's lifespan. It takes around 10 weeks for the sperm to reach maturity. Once the sperm is inside the woman's body it can live up to 5 days or even longer under favorable conditions. However, when it is outside the body, it can only survive from few minutes to several hours.
The UX developer role is a discipline under the overall user experience umbrella. This means that to become a UX developer you need to have at least a general understanding of the core UX principles, philosophies, and methodologies.
A content developer is also known as a web writer or editor. He or she is responsible for the production and repurposing of text/graphic/audio content on sites. So now you know the difference between a creative director and an art director and the various other designer jobs out there. If there is any missing please just leave a comment.