What is Zoology? Crossword

The study of the animals God made.
Process used to group and name all living things.
Phylum used if you have a spine
Animals that have a backbone.
Animals that have no backbone.
The class used for birds.
The class used for animals the have fur, give birth to babies, and nurse their babies with mother's milk.
The two-name system used by scientists to name animals.
The pressing of the air around you as you move.
Shape of a birds wing.
The difference between the air pressure around the top and bottom of a wing.
The force made when a bird flaps its wings.
The force that tends to slow a flying creature.
An object that can travel though the air without a lot of drag.
Things that change in an experiment.
Places animals live.
Blending in so well that you are hard to see.
Built in need to do something for survival.
When all of one type of animal dies.
Animals that are dying out and might become extinct.