The half-life of Carbon-14 is 5, 730 years. you find a sample where 1.5625% of the original Carbon-14 still remains how old is that sample ?

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

Many rivers in central asia come from

What is the term for a government where power is carefully divided between a central government and several regional or provincial governments? a.) unified or central government b.) federal government c.) confederate government d.) republican government