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.
Prepare for the cost of owning a cockatiel. The average cost of a cockatiel is only $80-100, but the start-up costs for its cage, food and equipment can easily reach $300.Also remember that the cockatiel will need food and toys, and at least one veterinary exam per year.urchase a cage and equipment for your cockatiel. Cockatiels need a lot of room to exercise, so you want the biggest cage you can accommodate. The minimum recommended cage size for a single cockatiel is 24 x 24 x 24.