When rock is broken down into smaller and smaller pieces, we say the rock has undergone
A) chemical weathering.
B) mechanical weathering.
C) erosion.
D) lithification.
Answer: B
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The Cassini mission to Saturn consists of
A) an orbiter that orbits Saturn and a probe that descended to the surface of Titan. B) a large spacecraft that flew by Saturn on its way to other planets. C) an orbiter that orbits Saturn and a probe that descended into Saturn's atmosphere. D) a spacecraft that orbits Saturn and a sample return mission that landed on Titan, scooped up a surface sample, and will return it to Earth.
The names of the seven days of the week are derived from the names of the members of the solar system that are visible to the naked eye
Indicate whether the statement is true or false
Compared to the summer, the atmospheric pressure above a Martian polar cap in winter is
A) lower B) about the same C) slightly higher D) much higher
Three identical resistors can be connected in any combination. It's not necessary to include all three in any given combination. The number of distinct values of resistance that can be made is
A. three. B. six or more. C. four. D. two or fewer. E. five.