What determines the shortness or altitude of a human?

What determines the shortness or altitude of a human?
Genetics and diet would be the two causes of this.
First of adjectives genetics is the blueprint, or more accurately the set of instructions used to fashion you. Your genes determine this and things like how high you're going to be. But this is only partly the issue.
What a person eat also determines this. If you get a set of the same twins, separate them at birth and feed them different amounts, when they grow to prime of life you'd notice a difference. The one that be well feed would be as tall and okay built as they were supposed to be. The one that be malnourished would be smaller and more frail than his or her twin. This is because they never received satisfactory nutrition growing up to be able to build their body the route it was supposed to be built according to the instructions.
inheritance and sometimes environmental factors
Yes definately inheritance and diet are the main reason for height.
Speaking from individual the tallest in my WHOLE ethnic group including all my relatives from equals to generation, I truly believe that the use I am the tallest is because I was extremely chubby growing up and all I used to do be eat lots of meat and drink lots of milk (protein).
So inheritance definately play a role but if you want a kid to grow, feed him TONS of protein and calcium and I'm sure you will see a difference.
I'd vote genes is the primary factor, and the secondary factor is nutrition, followed by environmental and lifestyle factor.
Some people may hold tall parents but because they live a poor lifestyle e.g. doomed to failure drinking habits, smoke, no exercise, famine of rest, and furthermore malnourished, their body doesnt own enough nutrients to grow. so simply they might still end up shorter than their parents.
a ruler