Changes in the orbit of the earth caused the ice sheets to spread across Canada.
Answer:
The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth's surface, which forces scale to vary across a map. Because of this variation, the concept of scale becomes meaningful in two distinct ways.
Explanation:
Cell D is a plant cell and Cell C is a animal cell
Answer:
b
Explanation: I think it is b, but may not be right