A ball is tossed upward at 50° to the horizontal. While rising its horizontal component of velocity
A. decreases.
B. increases.
C. remains unchanged.
D. none of the above
Answer: C
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The program that makes it possible to build manufacturing assembly plants in northern Mexico is called
A. maquiladora B. ejido C. fabrica D. economica
What characteristic of continental crust accounts for more than half of Earth's solid surface being below sea level?
a. Continental crust is denser than oceanic crust. b. Continental crust is thinner than oceanic crust. c. Continental crust is less dense than oceanic crust. d. Continental crust is both less dense and thinner than oceanic crust. e. Continental crust is the same density and thickness as oceanic crust.
Which type of RNA degrades specific mRNA molecules?
A) tRNA B) rRNA C) siRNA D) snRNA
Match the causes of soil erosion with the soil conservation practice intended to reduce that erosion.Wind velocity:
A. Keep soil covered B. Contour plowing C. Provide shelter for fields D. Return organic matter to soil