Yes, a standard deviation can be less than one.
No, it is not okay to say :as less as possible." That is incorrect because "less" is comparative meaning that it needs to be followed by "than (something)." It is better to say "as little as possible," or "as few as possible."
It is possible for chlamydia to show up in less than a week.
-500.3 is one possible answer.
Yes, it is possible to get HIV if you had sexual intercourse for less than a minute.
49 is one possible answer.
It is not possible to tell.
If you have had your first menstrual cycle then you can get pregnant. If you do not wish to get pregnant you should always use a condom and a reliable method of birth control. If you are wanting to conceive and have questions about your weight you should talk to your dr.