The short answer is: "Yes".
( See link below for details "Eastern Orthodox Church Beliefs and Practices")
Being Orthodox is the same as being Christian, because it is the religion that started Christianity.
for the most part, there is a huge Greek Orthodox Christian population. pretty much anyone who isn't greek orthodox immigrated.
The Orthodox Christian Church is over 2,000 years old, however, the name for this Church in Greece and some other parts of the world started to become known as "Greek Orthodox" from about 1821. The Greek Orthodox are part of the Orthodox Christian Church (sometimes called the Eastern Orthodox Church) which is the same Church that Jesus founded in 33 AD.
same-sex marriage is not recognized by any of the Orthodox churches and it is viewed as a sinful non-christian behavior. The inherent nature of a person to be gay is not recognized by the church.
Yes, both are of the Eastern Orthodox faith. The only major difference is the language of the liturgy (Bulgarian or Greek).
Eastern Orthodoxy is a Christian denomination (the second largest in fact). Therefore, they have the same commandments as any other Christian denomination- the 10 Commandments given to Moses.
If by 'Greek Orthodox' you mean the Eastern Orthodox Faith (of which Greek Orthodoxy is a part) then it began in the year 33 AD. If you are referring to the Church of Greece, then it began in the year 1850. However, Orthodox Christianity existed in Greece since New Testament times (from St Paul's travels to Athens) and for most of its history, Greece came under the jurisdiction of the Ecumenical Patriarchate of Constantinople. The name "Greek Orthodox" should not be used to describe the whole Eastern Orthodox Church. People who are Greek and Orthodox belong to the same Orthodox Christian Faith. There is no nationality in the Orthodox Church. It is open to people of all backgrounds, races and cultures.
No, it is considered a sub-group. "Eastern Orthodox" is a broad term used to edscribe the group of chruches that split with the Roman Catholics in the 11th century
No, it does not.
If by 'Greek Orthodox' you mean the Eastern Orthodox Faith (of which Greek Orthodoxy is a part) then it began in the year 33 AD. If you are referring to the Church of Greece, then it began in the year 1850. However, Orthodox Christianity existed in Greece since New Testament times (from St Paul's travels to Athens) and for most of its history, Greece came under the jurisdiction of the Ecumenical Patriarchate of Constantinople. In 1850 the Holy Synod in Constantinople declared the Church of Greece to be autocephalous (meaning self-governing). The name "Greek Orthodox" should not be used to describe the whole Eastern Orthodox Church. People who are Greek and Orthodox belong to the same Orthodox Christian Faith. There is no nationality in the Orthodox Church. It is open to people of all backgrounds, races and cultures.
Orthodox Christians use the same Bible as Catholics, Protestants, and most other Christian denominations.
No, it is not the same process.