Answer:
Cardiovascular and respiratory.
Explanation:
Aerobic excerise raises your heart rate and incresases blood flow. Doing excersises repeatedly that raise your heart rate to and elevated, steady rate help with cardiovascular conditioning, and the respiratory system contributes by regulating your breathing, and oxygen reaching your blood, being pumped by the heart.
Cirrhosis effects the liver.
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<span>What is another national organization that is involved in the research of disease is the?
</span>The National Organization for Rare Disorders (NORD)