Which statement provides the best evidence that the muscular system interacts with the respiratory system to carry out life processes?

a
the absorption of oxygen by sacs called alveoli shows how specialized tissues are necessary for movement of substances through the respiratory system.

b
the protection provided by the rib bones shows how the respiratory system needs hardened organs to keep it working properly.

c
the diaphragm’s movement downward to draw air into the lungs shows how muscles are necessary to bring air into the body.

d
the initiation of the breathing process by the phrenic nerves shows how neurons are necessary for blood oxygenation.

The correct statement is C The diaphragm"s movement downward to draw air into the lungs shows how muscles are necessary to bring air intto the body.

Explanation:

Diaphragm is important part of the respiratory system.During inhalation of oxygen diaphragm moves downward with the help of adjacent respiratory muscle by the same way during exhalation diaphragm moves upward to diffuse the carbon dioxide out of the body.

    Diaphragm along with respiratory muscles play an important role in proper gas exchange.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.