Answer:
(VEE-nuh KAY-vuh) A large vein that carries blood to the heart from other areas of the body. The vena cava has two parts: the superior vena cava and the inferior vena cava. The superior vena cava carries blood from the head, neck, arms, and chest.
A negative outcome of pesticides would be B. harmful to humans if used improperly.
Enzymes break up the electrons of water to yield oxygen and hydrogen gas
