Which of the following describes the correct pathway

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12.Which of the following describes the correct pathway of oxygen in the breathing system? A. Nose – trachea – bronchioles – bronchi – alveoliC. Nose – trachea – bronchi – bronchioles – alveoliB. Nose – bronchioles – bronchi – alveoli – tracheaD. Nose – alveoli – bronchi – bronchioles – trachea 13. What causes blood pressure? 14. Genes located on the X chromosomes are called 15. A different form of a gene that controls a certain traits. 16. Traits that are expressed exclusively in one sex of the species. A. Y linked genesB. X linked genesC. sex limited D. Sex influenced 17. 17. It pertains to the number of organisms of the same species living in a certain place. 18. When a species’ population become so low that only a few remain, the species is considered
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