Answer:
C) They are compressed during inhalation.
Explanation:
Birds breathe through rigid lungs that are located in the animal's thoracic region. The trachea of birds divides into bronchi that branch inside the lungs into very thin tubes called parabronchials or parabroncholes, which are irrigated by blood capillaries that allow gas exchange.
In birds there are no pulmonary alveoli (as in mammals), but air capillaries that depart from the parabroncholes. Oxygen gas passes from these capillaries to the blood capillaries, thus causing gas exchange.
In the lower portion of the bird's trachea, before branching the bronchi, we can find the syringe, a bag-like structure that has vocal cords responsible for the birds' scream and song. Most of the time, the sound emitted by birds serves to attract the mate, mark territory and prevent birds of the same species against some predator or other danger.
Where is the phot for the video?
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introduced to individual genes, as well as genetic pathways that play important roles ... Glutaminolysis, and Fatty Acid Metabolism in Normal and Neoplastic ... As such, genetics-based therapy for .... TP53 (p53) is the most commonly mutated gene in cancer ...... Pro72Arg) that alters the amino acid sequence of the protein.
Saethre-Chotzen syndrome, Pro136His TWIST mutation, hearing loss, and ... Direct sequencing of the polymerase chain reaction-amplified coding region of the .... The present study took place at the Hospital for Rehabilitation of Craniofacial ... The sample was 19 patients with syndromic craniosynostosis (10 Apert, 5
The answer for 21 I think is false
Uranium is not a renewable resource.
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