Which characteristics can be inherited ?

-ability to roll the tongue

-the length of hair in a human

-the ability to play piano

-the appetite of a puppy

sorry this is for science, not history. my bad! and , you!

Ability to roll the tongue IS NOT heritable.

Explanation:

This particular point is addressed in Adam Rutherford's book "A Brief History of Everyone Who Ever Lived". (I'm going from memory here so someone can correct me if I've got some details wrong): It was thought for a long time that tongue rolling WAS a heritable trait, but studies of identical twins showed that sometimes one twin can do it, while the other can't, which pretty much puts paid to that hypothesis. Apparently even the guy who first posited (or popularised?) the idea that it was heritable, is now embarrassed when he is told that some science classes still teach that it IS heritable.

As for the other 3 - no idea.

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.

c. free trade can lead to low pay for workers in poorer countries.