The answer is to make sure that one branch of government couldn't completely control the other branches of government
A high concentration of aluminum and a low concentration of Iron.
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Mountains are formed by the movements of the tectonic plates and Earth's. Movements deep beneath the Earth's surface cause a variety of reactions, and the results in different types of mountains. Mountains can form as a result of the volcanic activity, the collision of 2 tectonic plates or a movement along a fault line.
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Answer:
c) As seen from Earth, the planet's orbit must be seen nearly edge-on (in the plane of our line-of-sight)
a) You must be able to precisely measure variations in the star's brightness with time.
g) The planet must have an orbital period of less than about 1 year.
Explanation: