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Q5: Mycorrhizae are nitrogen-fixing bacteria living within the
Q13: In polygynous species of animals,males usually choose
Q14: An ecologist measured the length and weight
Q16: The deepest water of an ocean in
Q16: _ competition results when individuals of one
Q18: Coastal zones of contact between freshwater from
Q33: The boundaries between communities are usually sharply
Q48: When a species expands its niche in
Q52: What is the dominant sulfur gas emitted
Q67: A chemical reaction requires energy to proceed.This