A tracer is a substance with what attached to it?
a. water
b. carbon
c. a radioisotope
d. an ion
e. a positron
C
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Terrestrial biomes are defined in a large part by ________.
A. the dominant animals that live there B. the longitude of the biome C. the altitude of the biome D. the dominant plants that live there
Animals release energy from food by converting elements in the food to different elements.
a. true b. false
Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. Approximately how much glycogen would a bear have to add to achieve a similar feat?
A) 25 pounds B) 50 pounds C) 75 pounds D) 100 pounds
What is the name of a photograph of a specimen obtained with a microscope?
A. dermatome B. negative C. chromatograph D. micrograph E. thermograph