Answer:
The kidneys take of up more Ca2+ and release vitamin D. The bones release Ca2+. The intestines increase reabsorption of Ca2+.
<span>The ramp on an automobile transport truck is used to lift cars high into the air. An inclined plane makes it easier to raise something heavy, like a rock. Instead of lifting the rock straight up, you can raise it from its original location with less force by pushing it up a ramp.</span>
A graduated cylinder measures the volume of an object.
