What is the first element in the periodic table’s fourth transition series?

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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

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#Question id: 8928

#XL - T Zoology

An adult animal that possesses bilateral symmetry is most certainly also

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#Question id: 8928

#XL - R Botany

An adult animal that possesses bilateral symmetry is most certainly also

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#Question id: 8929

#XL - R Botany

An obsolete taxon, the ʺRadiata,ʺ included all phyla whose adults had true radial symmetry. Today, the ʺRadiataʺ is more correctly considered to be

1. a clade.

2. a grade.

3. monophyletic.

4. paraphyletic.

5. polyphyletic.