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#Question id: 8924
#XL - R Botany
Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?
1. Protostomes invade terrestrial environments.
2. Cambrian explosion occurs.
3. Deuterostomes invade terrestrial environments.
4. Vertebrates become top predators in the seas.
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#Question id: 8925
#XL - R Botany
What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
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#Question id: 8925
#XL - P Chemistry
What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
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#Question id: 8926
#XL - R Botany
Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that
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#Question id: 8927
#XL - R Botany
Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that
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#Question id: 8928
#XL - S Microbiology
An adult animal that possesses bilateral symmetry is most certainly also