The angle of repose represent a balance between the driving force and resisting force. Which of the following is the driving force?
A) Gravity B) Shear C) Inertia D) Friction
A
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About ____ of the world's human population lives in the developing countries
a. 20% b. 40% c. 60% d. 80% e. 90%
The Red Sea was created when
A. two tectonic plates pulled apart and formed a rift valley. B. three tectonic plates converged and created a depression. C. increased carbon in the atmosphere created more rainfall in the area. D. the Arabian peninsula crashed into Southwest Asia 25 million years ago.
The ____________________ or focus of an earthquake is the location within the crust where the energy of an earthquake is released. The ____________________ is the point on Earth's surface directly above the focus
Fill in the blank(s) with correct word
Molecules which regulate chemical processes without being used up are called
A. nucleotides. B. acids. C. catalysts. D. bases.