Happens when a lineage splits into two or more lines of descent.

Look at the photo of the leaf. which term best describes this leaf?

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere

There are only about 250,000 known fossil species. true or false