I know this is scary....
They're acknowledging the fear that the patient has and are also communicating hope by being positive.
Answer:
Toxic pollution low nutrients and near shore habitat changes
Hope this helps !!!
Explanation:
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. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.
