(Topographic Map)

What is the elevation at point F?
A.120
B.110
C.130
D.50

In the diagram below dab and dac are adjacent angles

The covers all of earth like a thin shell, but it is not a solid sheet of material. it is broken up into several large sections and many smaller ones. fill in the blank.

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.