After running home from school, a girl wants to know how the carbon dioxide she is exhaling is produced. which explanation best answers
a. it is waste released from the heart.
b. it is an energy source from the lungs.
c. it is waste produced by the cells in her body.
d. it is an energy source produced by the cells in her body.
her question?

The short-term effect of tar on the body is increased blood pressure.

This is s cute awee : (( . well if she's showing you signs that she may like you , then shoot your shot ! don't be afraid . & if you're unsure that she's giving you these signs , then wait out for a little bit . most girls are different . some may act really sweet , but only bc you're a good friend of hers . that , or she might like you . you just never know . but i think you should sit down with her & tell her how you feel . but don't be awkward & shy . just be straight up & tell her how you feel . if the feelings aren't mutual , then don't cry about it . you need to respect her decision & look for others in the world . feelings can be difficult & confusing , but don't be afraid to show them . i say you play it out & if you're still unsure about it , talk to her . - rach