There are a great many different chemicals that can be used in the commercial production of leather, many of which are harmful and some of which are simply poisonous in quantity. In other words, in more than very small quantities, yes.
The desire to eat inappropriate substances is known as "pica." It is a treatable emotional disorder, and we strongly suggest you seek out a therapist who is familiar with the condition.
yes the lichens are harmful but to some humans
They are not harmful to humans
Phone radiation can be harmful to humans. It is harmful when the person is on the phone a lot.
earthworms are not harmful to humans theyare just pink and slimmyNo. Worms that are harmful to humans are roundworms, flatworms and hookworms.
Americium is harmful to humans because is very radioactive.
No they are not. In fact, humans are more harmful to them then they are to us.
No, geckos are not harmful to humans. If anything, they are beneficial to humans because they eat insects
really harmful
Only if you get hit with it. Bonded leather is just a product made from leather and other materials to look like leather but at a cheaper cost
yes all fumes are potentially harmful to humans
yes! eating the nip of pencil is harmful if its made up of graphite
There are many harmful effects of goat on humans. For humans that are allergic to goats they can potentially die.