What are the three main groups of vertebrates?
A. Mammals, birds, and fish
B. Dinosaurs, reptiles, and amphibians
C. Reptiles, amphibians, and insects
D. Plants, fungi, and bacteria
Select your answer:
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Human Body Systems › ViewWhat happens to what’s left of our food after it goes through the intestines?
A. goes back to the stomach
B. absorbed into blood
C. becomes stomach acid
D. disposed of in the bathroom
Covid-19 › View
Are viruses living or non-living?
A. living
B. non-living
C. a little of both
D. zombies