What type of energy is the energy in chemical bonds?
a. solar energy
b. activation energy
c. kinetic energy
d. potential energy
e. thermal energy
ANSWER: d
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Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall. They spend the winter in these warmer areas, where they feed and prepare for the spring migration north and another breeding season
Two hypothetical species of sparrow, A and B, overwinter together in mixed flocks in Costa Rica. In spring, species A goes to the east coast of North America, and species B goes to the west coast. What can you say about the isolating mechanisms of these two species? A) They must have strong postzygotic isolating mechanisms to spend winter in such close proximity. B) They must have strong prezygotic isolating mechanisms to spend winter in such close proximity. C) Their winter habitat has no bearing on their degree of reproductive isolation. D) Reinforcement must be occurring when they winter together.
Which list of plants contains only basal angiosperms?
a. magnolia, cinnamon, avocado b. asparagus, bay laurel, orchid c. spice bush, banana, peach d. water lily, yucca, corn
Which of the following areas is not associated with the frontal lobe?
A. motor speech (Broca's) area B. premotor area C. prefrontal area D. primary visual area E. primary motor area
Many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of _____
A) convergent evolution B) a homologous structure C) natural selection D) a vestigial trait