Take a shower or a bath
A long shower will take more water than a bath, but a bath will usually use more water than a short shower.
In the shower, bath tub or even when you wash your hands.
Because to fill up a bath you need to use a lot of water, this water is more then what a typical person would use to shower (showers use less water/min then filling up the bathtube)
Of course you can. You can use a bathtub or a shower.
Usually a bath but depends on the depth of the bath and the lenght of the shower
Astronauts do not shower, they must sponge bath while they are in space.
The bath came first, then the shower.
No and yes it matters how long your in but for me i am in the shower for 5-10 minuets and it uses more then a bath. The reason is that when your in a bath the same water is being used through your cleaning but with a shower it is being filtered the whole time. For me I would recommend using the shower because it is a cleaner way to clean yourself.
Bath tubs don't necessarily contain a shower, and a shower may not have a bath tub. Shower tubs are a combination bathtub and shower; the shower head is usually mounted above the bath tub, allowing for bathing and shower drainage.
PVC is considerably safe to use as long as it is not ingested or consumed. That being said, PVC-free shower bath curtain is not necessarily 'safer' than PVC shower bath curtains.
Taking a shower typically uses less water than taking a bath, so it can be more water-efficient. Showers are also generally quicker and can help save time in your daily routine. However, the choice between a shower and a bath ultimately depends on personal preference and needs.