It is generally thought that four critical innovations arose during the evolution of our ape-like ancestors into humans. All of the following are innovations except
A) use of brain power for abstract thought.
B) development of the opposable thumb.
C) expansion of the human brain.
D) toolmaking.
E) bipedalism.
Correct Answer:
Verified
Q2: The process seen in many insects involving
Q3: The exoskeleton of arthropods
A)grows with the animal.
B)is
Q4: In sponges, the choanocytes or collar cells
A)are
Q5: Mammals have two traits that set them
Q6: In cnidarians, nematocysts are important in
A)food digestion.
B)excretion
Q8: All members of the phylum Chordata share
A)a
Q9: Birds are able to maintain relatively constant
Q10: Most members of the phylum Platyhelminthes
A)are free-living.
B)exhibit
Q11: All of the following are general characteristics
Q12: The mantle in mollusks
A)secretes the shell and
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