The two main parts are the Systemic and Pulmonary
I would say this is A. Head , hope this helps !
It actually moves the dirt down farther
Researchers report a reduction in mortality rates by 7-19% by eliminating even one serving of red meat from your diet every day.
The number of bones a person has in their body generally depends on their age. A human newborn baby has approximately 270 bones in his or her body. As the person ages and develops, some of the bones fuse together to make larger bones. By the time a person is an adult, they have the standard 206 bones in their body.