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Tropical rain forests typically have a thick layer of litter on the forest floor.
Q3: In some species of birds,males with the
Q4: In ponds and lakes,the zone beneath the
Q5: Strips of habitat that connect habitat patches
Q24: The organismic concept views communities as clusters
Q35: For a population to persist,which needs to
Q36: The zone in the ocean from the
Q41: Considerable evidence indicates that the null model
Q50: Which of the following values of evenness
Q57: Covering only 6 percent of the land
Q70: Lakes that receive large amounts of organic