Ready for a “root” awakening? Towering fossilized tree trunks entombed upright in layers of rock across the US are stirring up a flood of debate — with some researchers claiming the eerie formations could be evidence that Noah’s Ark and the biblical Great Flood were more than just Sunday school stories. The ancient remnants, known as “polystrate fossils,” have been found everywhere from Yellowstone National Park to Florissant Fossil Beds National Monument and Theodore Roosevelt National Park. They’re raising eyebrows because the trunks pierce vertically through multiple layers of sedimentary rock that geologists often say formed millions of years apart.…