tobacco
absorbed through the blood stream
the transmission of radiation/energy refers to the fraction of incident radiation that is absorbed by and passes through a substance or body +++ whereas emission refers to the amount of thermal radiation released or given off by a substance. for a substance to emit energy it does not necessarily need to have absorbed from another source, it may as well be its own internal energy.for instance i myself emit energy to the surroundings all the time, thus im able to set off the PIR detectors inside the special light bulbs my mum installed outside the house. however, a body or substance can only be said to transmit energy if the energy has come from another source, been absorbed by the substance and allowed to pass through it. so its basically the fraction of the absobed energy that leaves the body without being captured.hope this helps
Perspiration cools the body through evaporative cooling. As the sweat is turned to a vapor (drying from the skin) heat is absorbed from the body. http://www.answers.com/evaporative+cooling
No they are not
Yes, they must be in that form to be absorbed by the body.
Tar
tobacco
nutrients
Dietary Fiber
Poisoning occurs when any substance interferes with normal body functions after it is swallowed, inhaled, injected, or absorbed.
Yes, especially when drunk on an empty stomach. You will feel the effects within a minute or two.
Any excess vitamins that your body hasn't absorbed but that are water soluble leave your body in your urine.
absorbed through the blood stream
A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. Alcohol does that.
Substance abuse and substance dependence are two different things. Substance abuse- is when someone is using a substance more than directed or they are using it for different reasons than what it is for. Substance dependence- is when you have developed a need physicall and/or mentally for it and without it your body in some way experiences a withdrawl.
it is absorbed in the small intestine.
at the intestines