Science quiz 1/2

What, in class Aves, are some of God's most fascinating creatures.

Their magnificent what, their melodious songs, and their ability to fly reveal God's endless creativity and marvelous provision.

The bird's "thumb" bones support the what, a retractable group of feathers on the front of the wing, while the "finger" bones support the feathers on the wing tips.

The most important flight muscles are the what, which correspond to the muscles of your chest.

During flight, a gird's muscles require large amounts of oxygen, and the what's to be able to supply this need to prevent exhaustion.

Avian lungs lack alveoli; instead, they have tiny tubes called what, which allow air to flow through the lungs instead of just in and out.

Many birds have a what, a storage sac in the esophagus, to moisten food and release it in a steady stream to the rest of the digestive system.

Since a bird has no teeth to chew its food, its stomach has a special section called a what, which grinds food to make it more easily absorbed in the intestine.

These birds have primarily what, in which each eye sees a very different portion of the world around them.

The eyes of many hunting birds, such as owls, hawks, falcons, and eagles, are position father forward to give what, in which both eyes can focus on the same object.