Fluctuations in air pressure, often caused by vibration of an object, are known as:
A. light energy
B. sound waves
C. ultraviolet radiation
D. a nerve impulse
B
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Leaves arise
a. as part of the periderm. b. as part of secondary growth. c. at the nodes. d. as a result of differentiation of cambium cells. e. from the lateral, not the apical, meristem.
Dendrochronology can be useful in determining:a
the dates of past earthquakes and volcanic eruptions. b. future climate patterns. c. the solution to global warming. d. how tree growth affects air pollution. e. the time of day.
Which pattern of diploid and haploid phases reflects the life cycle of animals?
a. alternation between haploid and diploid generations b. one haploid generation followed by two diploid generations c. two haploid generations followed by a diploid generation d. a single generation that limits the haploid state to gametes, while the rest of the organism is diploid
What metric unit would be most appropriate for expressing the size of most viruses?
a. Nanometer b. Millimeter c. Micrometer d. Centimeter