About 600 million gallons.
(Average amount of blood in a human x number of humans currently on the planet.)
Yes. Bones need a blood supply as much as any other tissue.
oxygensugarfatsamino acidsetc.Basically everything cells need for survival.
No. Haemoglobin is a substance found in only red blood cells.
No, because generally, blood doesn't contain any bacteria. Therefore, it won't affect organism growth or results.
I am not positive but I believe that it could contain other chemicals that will mess up the test
It depends. You need to decide which swimming place.
goggles
no
how to swim
swimming
Because arteries are narrower, thus increasing the pressure in the arteries. So you need thicker walls to contain the blood under pressure.
Some viruses contain only RNA (and need a host with DNA in order to replicate themselves). Red blood cells of mammals are anucleated (lack a nucleus) and do not contain nuclear DNA as a result.