But it can also be the result of a number of health conditions, such as: 1  Noise-induced hearing loss. 2  Ear and sinus infections. 3  Diseases of the heart or blood vessels. 4  MÃ©niÃ¨reâs disease. 5  Brain tumors. 6  Hormonal changes in women. 7  Thyroid abnormalities.
The Aryan Migration. Before the time of the Aryan migration into the Indian subcontinent, there was a highly developed civilization in ancient India known as the Indus Valley Civilization, which was located in what is Pakistan and northwest India today, on the fertile flood plain of the Indus River and its vicinity.he Aryan Migration. Before the time of the Aryan migration into the Indian subcontinent, there was a highly developed civilization in ancient India known as the Indus Valley Civilization, which was located in what is Pakistan and northwest India today, on the fertile flood plain of the Indus River and its vicinity.
5. In what regions of the world were pre-Neolithic societies located? List two ways theres hunter-gatherers adapted to their environment. 6. In what regions of the world were Neolithic societies located? List two ways these people adapted to their environment. Chapter 4 | Vocabulary 1. Mesopotamia 2. Sumer 3. city-state 4. Tigris River 5. Euphrates River 6. irrigation system 7. Sumerians 8. Zagros Mountains 9. levee Essential Questions | 1. Where was Mesopotamia located? Briefly describe its main physical features and climate. 2. Did the geography of Mesopotamia make it an easy or difficult place to live? Explain. 3.