Breathing is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly to bring in oxygen and flush out carbon dioxide. The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction and then exhaled due to muscle relaxation. Breathing, or "external respiration", brings air into the lungs where gas exchange takes place in the alveoli through diffusion. The body's circulatory system transports these gases to and from the cells, where "cellular respiration" takes place. The breathing of all vertebrates with lungs consists of repetitive cycles of inhalation and exhalation through a highly branched system of tubes or airways which lead from the nose to the alveoli.The number of respiratory cycles per minute is the breathing or respiratory rate, and is one of the four primary vital signs of life.
The statement which is correct about when to use a specific type of language is: D. Friends usually speak to each other informally.
A language can be defined as a structured system of communication that is typically used by humans, especially through the use of syntax (words), signs, and gestures.
In English language, there are two (2) main types of language and these include:
- <u>Formal language:</u> it is characterized by the use of standard English language and as such, it is primarily used for professional or academic purposes.
- <u>Informal language:</u> it is characterized by the use of natural language or vernacular. Thus, it is primarily used when communicating with friends or family because it is more casual and spontaneous.
In conclusion, friends usually speak to each other by using an informal language.
Read more on informal language here: brainly.com/question/17935551
Perhaps D? It could depend on the context of the story though. I hope this helped, good luck! :)
Answer:
Benifits-Flexibility. (Students have the freedom)
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opportunity to scale
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study at own pace
work while you study
Sorry i know only these many
