Answer:
Explanation:
The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.
An example i can think of is...
the amount of salt present in human cells cytoplasm suggests we evolved from species in the sea
no because she is trying to help not hurt
The idea that all living things are composed of cells and that all cells come from other cells defines the cell theory.
Hope this helps! :)