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Lecture 4Practice
    1. A hypothesis that rivers formed before the rise of plant life
    2. A study of the effects that rivers have on soil formation
    3. A debate surrounding two opposing hypotheses
    4. New evidence in support of a previously proposed hypothesis
    1. Cotter’s research findings could not be replicated.
    2. Cotter’s research was based on one geographical area.
    3. Cotter’s research did not take into account lateral accretion.
    4. Cotter’s research did not account for changes in climate.
    1. That rivers now have the same shape worldwide
    2. That rivers were responsible for the spread of plant life
    3. That a change in the shape of rivers is linked to the spread of plant life
    4. That most rivers emerged during a specific geological time period
    1. To identify the evidence used to determine how the rivers flowed
    2. To explain why the rivers could easily dry out
    3. To suggest that the sediment was once fine sand
    4. To suggest that the geological record might be flawed
    1. Bends in the river become gradually straighter.
    2. Material from one riverbank is deposited on the other.
    3. The intensity of the river’s flow increases.
    4. The growth of plants on the outer riverbank is enhanced.
    1. To find out what the students know about Mars
    2. To question certain geological studies of other planets
    3. To express a reservation he has about the hypothesis
    4. To indicate that he is going to change the topic