Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.
Hi there!
The Inferior and Superior vena cava, bring blood from the body right into the Atrium.
Hope this helps!
~DL
If the question has a true or false option that you can choose it would be true.