The answer is true
The average American child does watch an average of 19 hours and 40 minutes of TV in a week.
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
I think it is the first one
True...........................................................
I believe the answer is d
