Permian Extinction: The Permian - Triassic extinction event, colloquially known as the Great Dying or the Great Permian Extinction, occurred about 252 million years ago, forming the boundary between the Permian and Triassic geological periods, as well as the Paleozoic and Mesozoic eras.
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Answer:
Three tissue layers I think
its the time 78 s i hope this helps
Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.
