No, your heart model cannot function if the straw is blocked.
1. the independent variable (the thing the person is changing) is the different type of mouthwash. the dependant variable (the affect of the independent variable) is how much bacteria the mouthwash kills
2. the independent variable for this one would be the plants growing in soil or water, and the dependant variable is how do the plants grow.
Answer:
The spinal cord starts at the bottom of the brain system and ends on the lower back as it tapers to form a cone called the conus medullaris.
Explanation:
The bold part is what you need to know!
