Some runoff initially flows in thin sheets and eventually collects in miniature channels called rills and brooks.
question 10 options:
true
false

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.

i believe your answer would be phagocytosis