Arabs (420 million) are more numerous than Kurds (35 million) and Persians (70 million).
Yes. Most Arabs and Kurds are Sunni Muslim and most Persians (Iranians) are Shiite Muslims, but there are many religious minorities among all three of these peoples. Many of those minorities are oppressed in some or most of the nations where these peoples live.
The Arabs are the most populous, but there are also Persians, Kurds, Turks, and numerous smaller minorities.
Sunni Muslims.
Southwest Asia is one of the most diverse regions of the world with an incredible number of minorities and ethnic subdivisions within what are usually established as monolithic ethnic groups. The largest ethnic groups in Southwest Asia are the Arabs, Persians, Turks, Kurds, Jews, and the Copts.
No. Persians and Arabs are distinct ethnicities. Persians are an Indo-European people who speak an Indo-European language (like most Europeans) whereas Arabs are a Semitic people who speak a Semitic language.
The Turks, mongols, Arabs, Persians, more Arabs and barbarians.
Almost half of Iran blong to the Persian nation/language. However not all Iranians are from Iran and not all Iranians are persians. Furthermore, most Iraqis are Arabs.
Most Kurds are Sunnis, so this question makes little sense as put. When the "Media" refers to the conflict between "Sunnis and Kurds" they are using the word "Sunni" as shorthand for saying "Sunni Arabs" in order to distinguish them from "Shiite Arabs". There are linguistic, cultural, and ethnic differences between Arabs and Kurds.
There are quite a number of ethnicities in northern Iraq, but the most numerous and most famous is the KURDS. Other ethnic groups in northern Iraq include: Assyrians, Arabs, Turkmen/Turcoman, Shabakis, and Yezidis.
The Kurds are the most populous ethnic group in northern Iraq, but there are other minorities such as Arabs, Turkmen, Yazidi, Azeri, Turkish, and Persian.
Most Kurds are Muslims, so yes. There are a minority of Kurds who are Yazidi or Zoroastrian which are henotheistic faiths and not strictly monotheistic. There are also Kurds who are Atheists.
Most Persians today are Muslim, but before the advent of Islam in Persia, most Persians were Zoroastrians.