Question

Which body system is responsible for bringing oxygen into the body?

The Digestive System

The Respiratory System

The Circulatory System

The Musculoskeletal System

7th grade science, please help. :)

Answer 1

B or C. Im sure you can google it. A or D do not make sense at all as it does not have to do anything with air.

Answer 2

lol its obviously the respiratory

Answer 3

As @missMob said, the respiratory system is the only correct answer here. None of the others are even close to being right.

http://www.nhlbi.nih.gov/health/health-topics/topics/hlw/system.html