Breathing begins with inhalation when the contraction of the diaphragm flattens on contraction, pulling the lungs down. The contraction of these muscles increases the volume of the lungs. This reduces the air pressure in the lung to below that of the external air. This pressure difference forces air to move into the lungs where gas exchange occurs. The relaxation of the diaphragm and intercostals reduces the volume of the lungs, which then increases the air pressure inside the lung to that above the external air. This forces air out of the lungs. The cycle goes on and on. Hope this helped!
The answer is 2. no plants or widely spaced plants.
Answer:She Is Out Later With Her Friends (missing Curfew A Few Times), Has Had A Car Accident In Which Tonya Admitted She Was Texting Her Best Friend, And They Suspect She Might Be Experimenting With Drinking. Explain What Is Happening ... The parents of 16-year old Tonya are very frustrated with their daughter. She.
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Overview. Religion in pre-Islamic Arabia was a mix of polytheism, Christianity, Judaism, and Iranian religions. Arab polytheism, the dominant belief system, was based on the belief in deities and other supernatural beings such as djinn. Gods and goddesses were worshipped at local shrines, such as the Kaaba in Mecca.
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