About 530 million years ago, what adaptation evolved to make fish the dominant predators of the sea?
A) Scales
B) Fins
C) Internal skeleton
D) Sensory organs
E) Jaws
Correct Answer:
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Q23: One advantage that enabled the seed plants
Q24: The earliest multicellular animals in the fossil
Q25: The first multicellular terrestrial organisms were
A) plants.
B)
Q26: Multicellularity enables organisms to overcome cellular limits
Q27: Probably the greatest advantage for the original
Q29: Water-based photosynthesis converts carbon dioxide and which
Q30: The oxygen that arose in early Earthʹs
Q31: The endosymbiotic hypothesis accounts for the origin
Q32: The earliest photosynthetic organisms
A) probably used water
Q33: An anaerobic prokaryote engulfs a prokaryote capable
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