I think that the answer is C
Answer:
The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant. The causative agent of late blight is the water mold Phytophthora infestans. The Irish famine was the worst to occur in Europe in the 19th century.
settlement that has houses made of stone, adobe, and wood
It can be like it is as we are further away from the equator and quite close to the Arctic circle. Have a look at the pic I have sent. It is of the Arctic circle.
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Biology.......................