The liver breaks down many substances in the blood, including toxins. The liver also excretes bilirubin — a waste product of hemoglobin catabolism — in bile. ... The lungs are responsible for the excretion of gaseous wastes, primarily carbon dioxide from cellular respiration in cells throughout the body.
Answer:
B: The gravitational pull of the Sun keeps the planets from leaving their orbits.
Explanation:
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
<span>A squirrel and an oak tree are both examples of individual organisms</span>
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