bleach is a common base, so yes they can be
Which acids and bases are potentially harmful to childrens health?Read more: Which_acids_and_bases_are_potentially_harmful_to_childrens_health
A carbohydrate can be useful or harmful depending on the type that is eaten. Good carbohydrates have fiber in them.
No need to worry. Worms are small creatures and if accidentally eaten can be destroyed by acid in the stomach.
It is not HARMFUL, but will definetley give you a terrible stomach ache, if eaten in large quantity it could be harmful.
Well it's something that the dog has already eaten and needs to get rid of, but in truth, it's not harmful
Daffodils can be harmful to a horse, if too much is eaten.
only if you've been feeding them poison.
Bases, I'm not sure. But all acids I would say are, seeing as they are corrosive.
No it is currently being eaten away by a harmful rust bacteria
Yes, bananas are treated with pesticides, and their skin should not be eaten.
It is called a point mutation. Depending on where the bases are, as far as in the codon, some are not harmful.