Which of these is not a form of kinetic energy?
A) a cyclist pushing the pedals of a bike
B) a condor flapping its wings
C) a ball rolling down a hill
D) a covalent bond linking phosphate molecules
E) a runner, sprinting toward the finish line
D) a covalent bond
linking phosphate molecules
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In the United States, the smallest percentage of the labor force is engaged in
A) primary activities. B) secondary activities. C) tertiary activities. D) quaternary activities.
Respond to statements 113–117 with reference to the five biomes
listed below. a. tundra b. grassland c. desert d. taiga e. savanna M 113. A plant community composed primarily of shrubby trees widely spaced and surrounded by grasses is this biome. M 114. A community composed of herbaceous plants, no trees, a very short growing season, and relatively few animal species is likely to be this biome. E 115. Variable daily temperatures and plants that are highly resistant to desiccation characterize this biome. M 116. This biome has the richest soils. E 117. Conifers are most likely to be found in this biome.
During the __________ epoch, the mammals experienced an explosive adaptive radiation
a. Holocene b. Paleocene c. Pleistocene d. Eocene e. Pliocene
A person can discriminate loud and soft sounds because a loud sound:a
is sent to a different area of the brain than a soft sound. b. produces a stronger action potential leading to the brain. c. stimulates a greater number of hair cells. d. stimulates the hair cells more intensely, increasing the frequency of impulses sent to the brain. e. has a different vibration frequency than that of a soft sound.