Lower back pain is common in humans because of ____.
A) over-curvature of the spine
B) sidewalks
C) our upright stance
D) a Neanderthal mutation common in modern humans
E) the weight of our brains
Correct Answer:
Verified
Q34: Which fishes feed on soft-bodied invertebrates and
Q35: By adjusting the volume of gas in
Q36: Which young develop briefly in their mother's
Q37: The most primitive vertebrates are _.
A)jawless fishes
B)amphibians
C)cartilaginous
Q38: Amphibians are most dependent on an aquatic
Q40: Jawless fish move by _.
A)swimming with paddle-like
Q41: How are the feeding habits of lampreys
Q42: The descriptive term ectotherm, when applied to
Q43: Four of the five answers are traits
Q44: Nearly half of the 5,000 placental mammal
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