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The presence of channels carved out on the slopes of Martian volcanoes is consistent with
Q3: In the 19ᵗʰ century, Charles Darwin suggested
Q4: It is unlikely that we will be
Q22: What method has been used to determine
Q31: Energy utilization in living organisms is<br>A) one
Q39: According to optimistic estimates, the end of
Q41: Which of the following types of stars
Q52: Which term in the simplified Drake equations
Q62: Stars only exhibit a Doppler shift if
Q74: Which type of rock is the easiest
Q81: The Rare Earth Hypothesis suggests that<br>A) the