Which term means a certain window of time in which a particular ability, such as language, must be learned in order for it to be learned at all

What would you call a political system that is only meant to last for a short time

The specific department of health and human services (hhs) regulations that apply to research with children are known as: subpart b: additional protections for children involved as subjects in researchsubpart a: the common rulesubpart d: additional protections for children involved as subjects in researchsubpart c: protections for children in research

What challenges did nigeria faced after it gained its independence from britain