Plate tectonic theory states that the continents move around on the earth's crust, drifting in response to forces within the ear
th's mantle. What generalization would be true if plate tectonic theory is accurate? Dinosaur fossils can be found on all of the earth's continents in approximately equal proportions. All of the continents have organisms with similar adaptations living in similar environments. Animals located throughout the continents could have evolved from a single common ancestor. Fossils of the same species can be found on different continents that are separated by oceans
I would say photosynthetic bacteria are the most important, because if they disappeared most of the oxygen in the atmosphere wouldnt be here and complex life like humans wouldnt exist
