The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
Why is your question in Biology section, it should be in mathematics or in physics but that's OK
The answer of A is - 21.6666666666 or 21.7
The answer of B is - 21.6666666666 or 21.7
the answer of A and B are equal because speed and velocity is the same thing
A cell wall, cytoplasm and ribosomes
The answer is Hominids became more dependent on vision over time and less so on their other senses. <span>This statement is related to the general decrease in the importance of smell and the increasingly significant use of vision. The stereoscopic (three-dimensional) vision and the appropriate perception of the resulting depth enabled the development of visual acuity over time.</span>
Here are at least 2:distribution,and Mating Patterns.