I feel like sewage water would be a source of gray water because its all of human excretions mixed into one
Your answer is D. Cretaceous. The Cretaceous Period extends from circa 145 million years ago to 66 million years ago. During the Cretaceous, the late Paleozoic-early Mesozoic super continent of Pangaea completed its breakup into present day continents, although their positions were substantially different at the time.
Tundra.
Tundras are places that are frozen, such as Antarctica or the North Pole.
Answer:
Separated by great distance & Mesosaurus