Well, a number of things.
1) A learning disability or some form of disability can interfer with this.
2) Bad grades. Bad grades from stop you from entering universities or colleges.
3) Simply not naturally smart enough to.
4) Not enough effort. Some people just don't try enough.
5) Don't want to.
6) Costs. This is actually the most common reason, even with an academic or sports scholarship the costs are still extremely hard to keep under control.
7) Putting it off. Many people say they will do it later, but just never get to it.
No. Carbon monoxide interferes with the ability of your blood to carry oxygen while cyanide interferes with cellular respiration.
They need talent ability learning education and good vocal cords
This substance is carbon monoxide.
This gas is carbon monoxide.
phosgene
A sexual disorder
An important goal of education is the ability to think for oneself.
This compound is carbon monoxide.
carbon monoxide
Nothing physical is needed, but a good brain, education, and the ability to speak.
This chemical is carbon monoxide (CO).
You think probable to carbon monoxide.