Pls do thisit will mean a lot to me and pls don't say anything if you just want points

Which effect does an increase in a country’s literacy rate have on the people who live there?

There are traits like blood type and eye color, and others like speaking english or having a scar. what are the terms used to describe these different types of traits? how are each defined?

What did the leaders of the soviet union feel would provide the most protection for their country