Nothing, sorry to burst your bubble but chemicals all have their own effect on the brain the cannibinoids aka THC is only found in marijuana plants, therefore you can only get that effect from marijuana. There is just nothing that will replace it all you can do is live without it or move to Cali :).
No. THC is the chemical responsible for most of marijuana's psychological effects.
Yes you can. It also has some effects since they feed on the THC itself.
Yes. Any animal that metabolized THC would be affected. Any animal that had delta9-thc receptors, that is. However, insects do not have delta9-thc receptors. (And are therefore not "affected" by pot smoke. I surmise all "effects observed" are result of asphyxiation, and carbon dioxide, etc. poisoning.)
no
To answer your question simply, yes. That is not to say, however, that all marijuana plants contain enough THC for a user to feel its psychoactive effects. Hemp, for instance, is made from the same plant. However, hemp is made from cannabis plants that have virtually no THC in them and is still illegal to grow in the United States.
The effects of amphetamine are much more stronger than the effects of THC(pot). This will result in an absence or diminish of the effects produced by pot.
No. THC stays in your system for 3 weeks regardless of your size or age. However, your size can effect how strongly and how quickly the THC effects you. Hence the term "light weight"
there is no medical evidence of harmfull effects of thc on body.
Male plants are hemp. They do not produce enough THC to have any altering effects at all.
There is a pill called Marinol, that has a chemical compound in it similar to THC found in marijuana. But these pills by no means get you "High". There is no alternative to smoking marijuana. But no, there is no pill that gives you the same effects as Marijuana. Marinol is a placebo.
Yes, if you can feel the effects of it, then it's in your system.
Well, you don't actually need lungs to get high. The high comes from the bodies reaction to the chemical THC, not from the lungs absorption of the smoke. This is why people can get high from eating a brownie as well as taking a hit from a bong. Spiders may actually be able to feel the effects of THC when exposed to marijuana smoke. The THC effects the type of webs the spiders make.