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TiliK225 [7]
3 years ago
10

The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which

developmental feature?
Biology
2 answers:
marysya [2.9K]3 years ago
6 0

Answer:

the answer is A

Explanation:

Over [174]3 years ago
5 0
<span>whether the mouth is developed from the first or second opening.</span>
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