We do it, not on purpose, but in trying to machine objects
We benefit indirectly by producing products cheeper
factories are bad for the environment because of the gases they release- nitrogen oxides and sulpher dioxide. (sulpher dioxide causes acid rain)
An example would be acid rain, cuz it is sometimes natural (not all of it is caused by humans). So, when acid rain falls it kills many marine creatures, and this will eventually lead to a gap in the food chain.
All living things contain some form of acid, yes. Humans and animals require acid to break down consumed materials; and plants use acid in defense and reproduction.
We ( as in humans and animals as one) erode the earth by digging it up, and building over it. Also, our pollution increasing the process of eroding. It does that by the increase in acid rain, from pollution, which erodes rocks much faster.
bile acids
Yes, hydrochloric acid.
humans OF COURSE
yes
It is an AMPHOTERIC oxide. That is , in an environment of low(acid) pH it behaves as a BASE. In an environment of high(alkaline) pH it behaves as an ACID.
folic acid and amino acid
yes it will
no it doesn't