1) EM waves are blocked by opaque objects true or false 2) What Color would a blue object appear to be if it were placed in a room that had only red light in it

grey/black
White
Red/orange
Blue/indigo

3) A green frog will always look green no matter what true or false

thats not even an aswer choice

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 ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.