What organ system is this?
What organ system is this?
What organ system is this?
What organ system is this?
What organ system is this?
What organ system helps you move?
What organ system helps you fight disease when you get sick?
Simone Biles is a gymnast. She can move her body in amazing ways. She does jumps and flips.
When Simone Biles moves her body, what organ system is she using?
When Simone Biles breathes in oxygen and breathes out carbon dioxide, what organ system is she using?
When Simone Biles eats food before she performs so she can have energy, what organ system is she using?
When Simone Biles' brain controls her body's activity, what organ system is she using?