About 530 million years ago, what adaptation evolved to make fish the dominant predators of the sea?
A) jaws
B) scales
C) fins
D) internal skeleton
E) sensory organs
Correct Answer:
Verified
Q28: The earliest photosynthetic organisms:
A)probably did not produce
Q29: The earliest multicellular animals in the fossil
Q30: The organisms originally responsible for putting oxygen
Q31: One advantage that enabled the seed plants
Q32: The first multicellular terrestrial organisms were:
A)plants.
B)insects.
C)fungi.
D)amphibians.
E)reptiles.
Q34: Multicellularity enables organisms to:
A)be photosynthetic.
B)undergo aerobic respiration.
C)be
Q35: The proposal that certain eukaryotic cell structures
Q36: To survive successfully on land, plants needed
Q37: The oxygen that arose in early Earth's
Q38: Exoskeletons provided an evolutionary advantage to organisms
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