How do some predatory sharks find their prey?
a. They are attracted to vibrations in the water.
b. They use their keen sense of smell.
c. They use sensitive organs underneath their skin.
d. All of these choices
ANS: D
Sharks have sensitive organs arrayed in lines under the surface of their skin that detect vibrations in the
water. This and their sense of smell are important in the hunting of prey. Prey is mostly comprised of
fish and marine mammals. Information can be found in the section Fishes Are Earth's Most Abundant
and Successful Vertebrates
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Cultural geography
) is concerned only with material culture. B) is no longer relevant because the world has become homogeneous. C) explores the interactions of culture with space, place, and landscape. D) was denounced for its racist and upper-class bias by Carl Sauer.
What is the dew-point temperature of the parcel?
Take a parcel of air from the Bay of Bengal in the Indian Ocean up to Cherrapunji at 1500 m (4900 ft). Assume that its temperature is 30°C and has 90% RH at 0 m (0 ft) over the Bay of Bengal.
What will be an ideal response?
When you tune a radio to a certain station, you match the frequency of the internal electrical circuit to the frequency of that radio station. In so doing, you are employing the principle of
A) forced vibrations. B) resonance. C) beats. D) reverberation. E) wave interference.
If there were a loss of CRH-receptors on the anterior pituitary, what will likely happen?
What will be an ideal response?