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Yes, platyhelminthes are diploblastic, meaning they have two primary germ layers during embryonic development: the ectoderm and endoderm. They lack a mesoderm layer.
The phylum Platyhelminthes is believed to have appeared on Earth during the Ediacaran period, around 550 million years ago. They are one of the earliest known groups of multicellular organisms.
during calamity,food security is very affected
How have changes in the workforce during the past 20 years affected organizational police How have changes in the workforce during the past 20 years affected organizational police
how was texas affected by communication issues or developments during the civil war
No.Of course not
The Jews and Gypsies within the ghetto were the most affected.
Malta was one area that was most affected during the World War 2 in 1940.
no nothing..
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Hernan Cortez
The Japanese