Answer:
label A: South American plate
Label B: African plate
Label C: indo-Australian plate
Explanation:
Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
Answer:

Explanation:
Angle of depression = 
b = Height of building = 42 feet

p = Distance from the car to the base of the building
From the trigonometric identities we get

The distance from the car to the base of the building is
.
Answer:
The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt. Now, day by day new technologies are invented, causing more pollution than in the past. It is important now because we are developing in very fast steps and something should be done.
The answer is: A. Lake Erie with the Hudson River