How long does it take new species to form on earth?

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.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird