You can fall off, you can be hit by a car or another cyclist.
If your bike doesn't fit you properly you can encounter anything from chafing to nerve damage.
riding a bicycle to school
pot holes, shoelace getting stuck in the gears, and cars!!
Yes, because you don't inherit the skill of riding a bicycle.
you will be riding a bicycle
I am not riding
A bicycle
That's all down to how hard you're riding. Most people will use more effort when riding IRL than riding stationary bikes.
poop
A bicycle helmet is a piece of protective headgear intended to be worn while riding a bicycle.
diamondback is a good bicycle for cruising, but not for extreme riding or jumping
You are not moving relative to the bicycle.
No.