They were built out of sod, cut from the ground because wood was too expensive and hard to carry out in the less wooded areas of the prairies
Answer:
I think its Global Climate / Global Warming
Explanation:
This is because glaciers and ice sheets worldwide are melting and adding water to the ocean. And the volume of the ocean is expanding as the water warms.
The lowest surface air temperature in the S. Hemisphere happens in July.
