Answer:their weight
Explanation:
Ostriches weigh more than 400 pound and can be as tall as 9 feet.....making it 99.9% impossible for its flight......
Hope it helped?
It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance. also catalyse reactions in our bodies, transport molecules such as oxygen, keep us healthy as part of the immune system and transmit messages from cell to cell.
