After reaching the inner ear, the frequency of a sound primarily affects
A. the vibrational amplitude of the tectorial membrane.
B. the location of the greatest basilar membrane vibration.
C. the amplitude of basilar membrane vibration.
Answer: B
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The invertebrate group most closely related to the vertebrates is:
A. Echinodermata B. Urochordata C. Cephalochordata D. Ophiouroidea E. Notochordata
The largest reservoir of carbon is
a. living organisms. b. oceans. c. sedimentary rocks. d. the soil.
Which of these are examples of the effects of rising temperatures?
a. marmots are coming out of hibernation later in the year b. plants are blooming earlier in the year c. animals that were traditionally only found in temperate areas are being found in tropical zones d. maple trees are making more syrup than ever before e. all of the above
Vaccination is a form of Passive immunization
a. true b. false