depends on how much and how hard you ride. bicycling can use up anything between 300 and 1000 calories/hour, multiply by number of hours ridden yearly.
Riding a bike consumes about 0.049 calories per pound of body weight per minute. This means that a person weighing 150 pounds would burn approximately 7.35 calories per minute while biking.
about 50-60 psi for uphill riding
Depends on how you're riding. On a bike with a really upright riding position - not much. On a road bike which has the rider leaning way forward the rider has to use the back muscles and abdominals quite a lot to remain in position. If you're riding out of the saddle (like road bikers during tough climbs or MTBers during tricky/bumpy sections, then your arms and shoulders see a fair bit of work as well.
Chemistry has been involved in the production of pretty much every part of the bike. All from the paint to refining the metals the bike is made of.
Ice is slippery, right?
Pretty much all of them.
I don't think it will do much except flatten the grass and kill it.
There's really no telling as it's hugely dependent on the effort, duration and conditions of the ride. Anything from 300 cal/hour to 1200 cal/hour.
Riding a bike is good for your cardio and will give you great legs. It may help you gain a flat stomach as well depending on how long you ride and how fast.
well, intercourse is like exercise. Not to sound gross. But, you are using your muscles and other parts of your body like you would as if you were lifting weights or riding a bike, etc...
Depends entirely on how much riding the person does, and what the person would have done otherwise. If the person is riding a bicylce instread of using an motorized vehicle, then some CO2 will be saved. If the person is riding instead of walking, then there's no difference.
No single answer, depends on how much money you want to spend and what kind of riding you want to do.