Question: Q: The two ovaries are small, oval organs on either side of what part of the body? Choices: - lungs - heart - pancreas - uterus A:
Answer: uterus

Question: Q: What guards the opening between the right atrium and the right ventricle? Choices: - superior vena cava - brachiocephalic trunk - aorta - tricuspid valve A:
Answer: tricuspid valve

Question: Q: What produces almost one-half of the earth's oxygen through photosynthesis? Choices: - prokaryotes - algae - arthropods - protists A:
Answer:
protists