Citizenship tests and other related materials are available to the public at the United States Citizenship and Immigration Services website. Be wary of alternate website that offer similar services, citizenship is highly sought after and many scams and falsehoods exist on non-authoritative sites.
If you're doing RS aswell as Citizenship, you're most likely doing half GCSEs for both RS and Citizenship.
Ask the authorities but in most cases you can.
Obtaining a citizenship application for most countries can be done online, you will have to download the forms, fill them out, and return them. Most applications for citizenship are handled by immigration, and will come with requirements to become a citizen of any other country.
For the Greeks, the most important part of citizenship was to be involved in public discussion, debate, and activity designed to improve the welfare of the community.
Section 5 of the Citizenship Act sets out that the minister responsible (currently the Minister of Citizenship and Immigration) can grant citizenship in his authority as a minister of the Crown. No advice to the Governor General is required, as citizenship in Canada is not issued by the Governor General-in-Council.
Most probably there will be no effect, as long as you fulfill the requirements for citizenship.
The citizenship will not affect the marriage. While it could be considered perjury, it will not invalidate the license in most places.
In most countries only the citizens have the right to vote, foreigners are excluded.
The rules of dual citizenship are quite easy to understand. Most countries neither deny or recognizes dual citizenship. However, if you are a dual citizen you must enter the country with the country's passport you own.
Any child born prior to Jan 1981 to a British citizen living overseas has an automatic right to British citizenship. Most children born since 1981 have similar rights, though individual circumstances my disbar application.
An American can lose citizenship for varying reasons. Some of these reasons include being convicted for treason, voluntarily renouncing U.S. citizenship and obtaining naturalization in a foreign state.