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Q9: Natural selection refers to the ability of
Q14: Before the appearance of cells capable of
Q20: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX9305/.jpg" alt=" In the accompanying
Q28: An organism classified as an autotroph _.<br>A)is
Q34: The idea that sediments accumulate in horizontal
Q37: The oldest rocks (not minerals)on Earth are_
Q45: Headward erosion cuts through a drainage divide
Q52: The prevailing model for the formation of
Q54: To predict floods, scientists _.<br>A)monitor a stream's
Q58: What are the three primary sources of