The regulatory centers for the respiratory and circulatory systems are found in the cerebrum
There may be a shortage of clean drinking water in the future
The answer for your question is preganent
The ostrich doesn't strictly live in one biome, while it is true that they live in a warmer, dryer climate most of the time. But they are also known to live in colder regions as well, they live a nomadic lifestyle, as long as they can find food and water they can live happily.
Hope this helps!
