Only thebuilt a system of roads. the mayas, aztecs, and incas all had a. thehad a strict class system with an emperor at its head.

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

How can an organ, such as the lungs, work for multiple body systems?

Match each symbol with its description.