Answer:
glass like.
Explanation:
Like obsidian, if you break it it will be really sharp.
Answer: Appalachian Mountains, Rocky Mountains, Great Lakes, Lake Superior, Missisippi River, Great Plains, Silicon Valley, Atlantic Ocean, Pacific Ocean, Mount McKinley.
Explanation: Sir I'm pretty sure you could've just looked these up, but those are all the Geographic features I can think of,
THEY ALL FOUND IN AUSTRALIA. SPECIALLY IBRA BIOREGIONS
