<span>The resting heart rate will increase quickly in a person who has a high level of cardiovascular fitness.
False
</span>
Answer:
Secondhand smoke among children causes a myriad of problems with the respiratory system.
Explanation:
Pregnant mothers or young children that are exposed to secondhand smoke are more likely to suffer from SIDS (Sudden Infant Death Syndrome), babies could be born with low birth weights and/or underdeveloped lungs, children can suffer from acute respiratory infections and/or asthma, children can also suffer from increased ear infections as well.
Answer:
nicotine
Explanation:
it is a highly addictive substance
