Wash you hands
no
If your fingernails are short and your hands are clean, no!
Either tell someone or wash your hands with soap immediately
Yes because it can dry your hands!
You must wash your hands after an experiment so you don't contaminate yourself with anything harmful.
depends on how much ink you use... technologic might be harmful if you use the wrong ink... other than that its pretty good for your hands... honestly it is exercise and you will have quicker reflexes. dont use sharpie.
No, it won't cause any problems. In fact, there are collagen creams intended to be used on hands.
The dirt doesn't just simply "disappear". The cleansers kill most of the harmful bacteria that is on your hands, but the dirt is still on your hands. This is why washing your hands is more effective.
It is harmful because these can seep into the fruits and vegetables and then be consumed. They can also be left on hands and skin which can get into the body as well.
No they are not harmful however, like most reptiles it is probably a good idea to wash your hands after handling. A lot of reptiles can carry salmonella.
we can prevent harmful microbes in lots of different ways: by cleaning hands daily by staying fit and healthy by getting daily vaccinations