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.
Last year 2008, we raised a straight run of Black Australops. Of the 29 birds we bought, 19 were cockrels. We found a farm that butchered chickens and sent 17 cockerels there to be butchered when they were 4 1/2 months old. It was not cheap-over $5 per chicken.We were more than ready to get ready of the extra cockrels. The meat is different than store-bought chicken: small breasts, leaner meat, less fat.he first year I ordered 25 day old heavy breed cockrels. Raised them for 24 weeks then butchered them. They were different breeds and it was a little hard to kill them. They tasted okay but not good enough to do it again.