Answer:
The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. The carbon and nitrogen derived from these become the building block for nucleotides, nucleic acids, proteins, cells, and tissues.
Answer: B
Explanation: everything that it says is what you are supposed to do when working with a computer so your answer would be B.
i hope this helped ;)
It depends on the context; it does allow gas exchange to occur, however gas exchange occurs in the capillaries of the alveoli.
Note:
<em>The upper airway not only provides a passage for air to be breathed in and out of the lungs, but it also heats, humidifies and filters the air and is involved in cough, swallowing and speech. Air goes to the lungs where gas exchange will occur. </em>
If you are still confused try looking up gas exchange diagrams for more information.
TLDR: Disagree; it does allow oxygen to flow into the lungs as the upper respiratory tract is a passageway to the lungs. However, the upper respiratory tract is NOT where gas exchange occurs because the lower respiratory tract holds the lungs which allow for gas exchange.
Answer:
b) 20 %.
Explanation:
In 2012, there were many young drivers ( between age 15 and 20 ) who died in vehicle crashes, which is a decrease of 6 percent from 2011.
Additionally to this number, many young drivers were injured in the crashes, compared to 2011, for 2 %.
Motor crashes are the leading cause of death for the teenagers and young adults.
