This is because gravitational force is directly proportional to the mass of an object. Greater the mass, greater will be the gravitational force exerted by it and thus, more will be our weight. As the moon has lesser mass than the earth, it has a weaker gravitational pull and hence, we weigh less on the moon.
Cell Membrane = Controls what comes into and out of a cell; found in plant and animal cells
Answer:
E.
Explanation:
A fetus is able to extract O2 from its mother's blood because fetal hemoglobin has a higher affinity for O2 than maternal hemoglobin. Thus making it alot easier for the hemoglobin to bind to oxygen. This causes the oxygen-dissociation curve to move towards the left of the maternal oxygen-dissociation curve.