What is the theory of plate tectonics?
A) Earth is made up of a large number of geological plates that move slowly across its
surface.
B) The number of tectonic plates equals the number of continents on Earth.
C) Human activities are changing Earth's surface.
D) Earth was created 6,000 years ago.
E) Earth's continents are moving closer together.
A) Earth is made up of a large number of geological plates that move slowly across its
surface.
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Which of the following processes occurs when sinking air warms?
A. expansion B. compression C. friction D. condensation
Describe the forces acting on a slope, and also the various physical aspects of a slope, such as waxing slope and debris slope
What will be an ideal response?
Which mineral subgroup is the most abundant in Earth's crust?
A. ferromagnesian B. micas C. garnet D. feldspars
Formaldehyde is an especially problematic indoor pollutant because it is
A. Highly carcinogenic B. Used in so many household materials C. Produced naturally by the earth below buildings D. Far more toxic than most other substances E. So difficult to detect