The ________ refers to a huge expansion in biodiversity 530 million years ago, which also marks the ...

The ________ refers to a huge expansion in biodiversity 530 million years ago, which also marks the first appearance of invertebrate organisms.
 
  A) Great Ordovician Biodiversification Event
  B) Cambrian Explosion
  C) Rise of Reptiles
  D) Great Dying

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Q. 2 - The dominant plant group during the Mesozoic Era was ________.
 
  A) exosperms
  B) methanogens
  C) angiosperms
  D) gymnosperms

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Q. 3 - For how long were dinosaurs the dominant species on the Earth?
 
  A) 5 million years
  B) 37 million years
  C) 160 million years
  D) 546 million years

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Q. 4 - In what geologic period did lobe-finned fish adapt to terrestrial environments?
 
  A) Cambrian
  B) Devonian
  C) Triassic
  D) Ordovician

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Q. 5 - One hypothesis for the formation of life suggests that amino acids were carried ready-made to Earth by ________.
 
  A) solar radiation
  B) prokaryotes
  C) carbonaceous chondrites
  D) lightning