'This rocky, outermost layer of the earth is only 5 miles thick under the oceans, 25 miles under the continents'
the crust
SCIENCE CLASS: This rocky, outermost layer of the earth is only 5 miles thick under the oceans, 25 miles under the continents
This rocky, outermost layer of the earth is only 5 miles thick under the oceans, 25 miles under the continents
This rocky, outermost layer of the earth is only 5 miles thick under the oceans, 25 miles under the continents
SCIENCE CLASS
the crust
SCIENCE CLASS