The ring of fire is many under water volcanoes, it is a circle of volcanoes. It just takes plates to move or magma build up for it erput
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
Floods! Floods don't really happen to much, but there was a big one which caused the land to become super moist. Which made it difficult to do Dry Farming. I hope this helped! :)
The answer is d that glaciers erode and pluck from the entirety of the valley floor (including both the floor and walls of the valley) and the result is the U-shape of the ensuing valley as opposed to the typical V shape of valleys resulting from large streams or rivers.
<h3>I hope it's helpful for you ✌️✌️✌️✌️❤️✌️❤️</h3>
