A. The pressure is lower as you gain altitude because there are more molecules of oxygen and nitrogen. B. The pressure is lower as you gain altitude because there are less molecules of oxygen and nitrogen. C. The pressure is the same because there is no change in the number of molecules.
The price of a cockatiel depends on a few factors. Firstly the price depends on whether or not the bird is tamed. For a tamed cockatiel it would cost around $80 - $120 and a untamed cockatiel would cost $15-$30 (AUS) Also the colouring of the cockatiel plays a part in the cost of the bird, as more rare colours (such as lutino or pearl cinnamon) may increase the cost of the cockatiel.
The cockatiel is a specific species within the bird family commonly called cockatoo. There are 21 species of cockatoos within the family of birds Cacatuidae, and cockatiels are the only members of the Nymphicus genus.Cockatiels are the smallest birds in the cockatoo family and are one of the most popular pet birds.he most obvious way to discern a cockatiel from other cockatoos is the size difference. Cockatiels are about half the size of other cockatoos and have much smaller beaks.