Question

The first people to think about the idea of an ice age

were those who
A
B
C
D
walked through tropical rainforests.
lived near large bodies of salt water.
explored the mountains of Europe.
swam close to ancient cliffs.

Answer 1

The first people to think about the idea of an ice age were those who explored the mountains of Europe. They noticed various geological features that pointed to the presence of massive ice sheets in the past.

Step-by-step explanation:

The first people to think about the idea of an ice age were those who explored the mountains of Europe. These early explorers, known as geologists, noticed various geological features like U-shaped valleys, glacial striations, and erratic boulders, which pointed to the presence of massive ice sheets in the past. By studying these observations, they hypothesized the existence of an ice age. For example, Louis Agassiz, a Swiss geologist, proposed the idea of an ice age in the 19th century based on his studies of glacial features in the Alps.

Learn more about ice age