The fracturing (or breaking apart) of rock that occurs when water freezes
and expands inside a rock is an
example of which type of force?
A. a destructive force
B. a constructive force
C. an absence of force

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra