At a certain instant, a piece of radioactive material contains 10¹² atoms. The half-life of the material is 30 days. How long will elapse before 10⁴…
At a certain instant, a piece of radioactive material contains 10¹² atoms. The half-life of the material is 30 days. How long will elapse before 10⁴ atoms remain?
Citizenship is legal membership in a state with associated rights and duties. Acquired by: birth (jus soli – born in territory, jus sanguinis – born to citizens), naturalization, registration, or honorary grant.
Nigerian citizenship by birth: born in Nigeria before independence, or to Nigerian parents (since independence). Naturalization requires residency, good character, and intention to remain. Dual citizenship limited.
Rights: vote, hold office, protection, passport. Duties: allegiance, obey laws, pay taxes, defend country. Citizens differ from residents (may lack political rights) and aliens (non-citizens).
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