There’s a lot but probably you know the basics like they’re vertebrates which means they got back bones , they have a scaly skin , they reproduce shelled eggs , cold blooded
Answer:
true, the alternative would be postzygotic barriers.
Explanation:
The Grand Canyon is a Canyon that exist where an ancient river once flowed. The hydrosphere (all of water on earths surface.) Slowly eroded away at the rock of the grand canyon until a Canyon was formed this water evaporated into the atmosphere then percerpertated back down creating a cycle that ended with the formation of the grand canyon.
The answer would be D because it leaves you thinking about what will happen next. Hope this helped you out .