You might have to either lengthen or shorten the chain, depending on if you're getting a bigger or smaller sprocket.
2003 sounds more like the year of manufacture than anything else, and doesn't say anything about what type of bike it is.
You can change your job from "anything" to "anything else" as long as you have the appropriate background and training for "anything else" and can find an employer who whats you to do "anything else" instead of "anything."
Your legs, like the engine of a car works best in a given range of RPMs. Gearing on a bike allows your legs to work in this range regardless of if you're riding uphill, flat or downhill or anything else that can change in your riding conditions.
Tigers are only tigers. They cannot change into anything else.
Burning of sulfur (or anything else) is a chemical change, not a physical change.
Aluminum or anything else melting is a physical change.
Burning gasoline, or anything else for that matter, is a chemical change.
Burning logs, or anything else for that matter, is a chemical change.
If a check is made out to you, you can endorse it to someone else, but you cannot change anything else on the check (who it is made out to, date, amount, etc.).
No. People can not change into mermaids and mermaids are not real. No one can change into anything else.
Basically you take the number of teeth up front and divide by the number of teeth on the rear. BMX gear ratio is usually around 2.75, but but some riders want something else.
You can in custom scenario mode but not in sandbox or anything else