Answer:
it is w
Explanation:
i have done a similar question
Muscular: The muscular system helps the frog to move. This system can help them escape from predators and catch prey.
<span>Skeletal: The skeletal system provides support for the frogs body. This system goes along with the muscular system
the skeletal part is support for the muscular parts</span>
The air diffuses into the capillaries surrounding the alveoli.
2. The pulmonary veins carry oxygenated blood to the heart.
3. Air enters the bronchioles in the lungs and reaches the alveoli.
4. The capillaries join together to reach the arteries, transferring the oxygen.
5. The oxygen-rich blood moves from the aorta and reaches the kidneys through a series of blood vessels.
6. The left atrium fills with oxygen-rich blood and contracts to fill the left ventricle.
