(Q).
Q: What organs are the main organs of the urinary system? Choices: - spleen - prostate - gall bladder - kidneys A:
(A).
kidneys

(Q).
Q: Unlike corals, jellyfish spend most of their lives as what? Choices: - infants - pupae - cercariae - medusae A:
(A).
medusae

(Q).
Q: What is the largest object in the solar system? Choices: - the orbit - the earth - jupiter - the sun A:
(A).
the sun