96% of marine animal species became extinct in the permian mass extinction at the end of the paleozoic, 252 million years ago. why does the blue curve show only a 50% drop at that time?

5) these are organisms where the genetic material is not bound by a nucleus. they are usually unicellular.

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity