<span>Peter has a problem with his semicircular canals. This probably means that he has trouble with his balance. These canals, found in the ears, help people keep their balance while standing or sitting. If there is problem with those parts of the ear, then balance is compromised. </span>
The substrate is the substance being acted upon by the enzyme. The enzyme glucocerebrosidase breaks down glucocerebroside. Therefore, glucocerebroside is the substrate in this example.
Introduced species can harm our planet because in some regions of the world we are not prepared for their type of species, which can all in all cause damage.