The American Heart Association explains an electrocardiogram (EKG or ECG) is a test that measures the electrical activity of the heartbeat.
Language policy [edit]. Pashto and Dari are the official languages of Afghanistan. In 1980, other regional languages were granted official status in the regions where they are the language of the majority.
Ethnic Groups Population Ratio. Pashtun 42%, Tajik 27%, Hazara 9%, Uzbek 9%, Aimak 4%, Turkmen 3%, Baloch 2%, other 4%. Mainstream Ethnic Groups. Pashtuns. Pashtuns or Pakhtuns or Pathans or Persian Afghans are the largest ethnic group in Afghanistan. They constitute about two-fifth of Afghan population.