I’m pretty sure it’s for their horns?
Explanation:
The St. Lawrence seaway helped because it was large enough to allow shipping transportation to the USA. Which allowed Canada and the USA to trade goods. The seaway extends from Montreal through the Welland Canal in Ontario, Canada, to the eastern portion of Lake Erie.
(Have a great day!)
Answer: If the sin 30° = 0.5, then the cos 60° = 0.5 (same as 1/2)
C- Mariana Trench. It’s the only different form the rest. The others are a consequence of plates subduing or getting under another plate and pushing up.