Answer: B
Explanation: the sun is made of gas, which doesn't all spin together at the same speed like a solid rock would.
 
        
             
        
        
        
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
 
        
             
        
        
        
Answer:
Explanation:
The following scientific discoveries might be taught in the future.
- Edible water blobs.
- Helium balloons that travel to space.
- Autonomous cars.
- 3D printing.
- Existence of Dark Matter. 
- Sequencing Genome of Cancer Patient. 
- Creation of Human Organs.
- Water as Fuel.
- Face Transplants.
- Carpet alarm clocks. 
- Hyper-loop.
- Pod taxis. 
- GeeFi, a device that offers unlimited wi-fi anywhere in the world.
- Robotic Body Parts.
- T. Rex Tissue.
- Advancement in HIV Cure.