If ancestral humans did not develop an opposable thumb, grasping fingers, and binocular vision, how might their history have differed?
A. They would have been less able to occupy the trees.
B. They would have been unable to develop spoken language.
C. They would have been less able to walk upright.
D. They would have been unable to survive without changing their diet.
A. They would have been less able to occupy the trees.
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__________ muscular dystrophy is most common
among __________ and is caused by a __________. a. Myotonic; children; virus b. Duchenne; adults; mutated gene c. Duchenne; children; mutated gene d. Duchenne; adults; virus e. Myotonic; adults; virus
Transmembrane movement of a substance up a concentration gradient requires ________ transport
Fill in the blank with correct word.
In some chordates, the ________ is (are) replaced by ________.
A. gill arches; pharyngeal pouches B. a vertebral column; notochord C. dorsal hollow nerve cord; a ventral solid nerve cord D. notochord; a dorsal hollow nerve cord E. pharyngeal pouches; gills
Which of the following is not one of the six steps of the scientific method?
A. Gather market research data B. Ask a question C. Conduct an experiment D. Communicate the findings