The main factor that controls the rate of breathing is..
A.) concentration of carbon dioxide.
If we think about it.. When we breath in oxygen, right away it enters your lungs and turns into carbon dioxide. Well since your lungs need to process oxygen and bring oxygen into the blood stream. Then as soon as the oxygen comes inside (inhale) the oxygen turns into carbon dioxide and you breath it out (exhale) to get a new oxygen load.
Makes sense? lol
Good Luck! :)
Musk was born to a Canadian mother and South African father and raised in Pretoria, South Africa.He briefly attended the University of Pretoria before moving to Canada when he was 17 to attend Queen's University.He transferred to the University of Pennsylvania two years later, where he received a bachelor's degree in economics from the Wharton School and a bachelor's degree in physics from the College of Arts and Sciences.He moved to California in 1995 to begin a Ph.D. in applied physics and material sciences at Stanford University, but decided to pursue a business career instead of enrolling.He co-founded (with his brother Kimbal) Zip2, a web software company, which was acquired by Compaq for $340 million in 1999. Musk then founded X.com, an online bank. It merged with Confinity in 2000, which had launched PayPal the previous year and was subsequently bought by eBay for $1.5 billion in October 2002
An asthma attack is when the muscles in your airway swell up, causing your airways so shrink. This is due to an allergic reaction, in witch you inhale something and your body "over reacts" to it.
Answer:
the bones that form the skull, laryngeal skeleton, vertebral column, and thoracic cage. The bones of the appendicular skeleton (the limbs and girdles) “append” to the axial skeleton.
