The first level of inquiry in making a
systematic survey of biodiversity is carried out
a. at the ecoregion level.
b. among the riparian zones.
c. in hot spots.
d. at the regional research station.
e. on a global scale
C
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The most commonly used unit for measuring cell size is a ____
a. decimeter (dm) b. centimeter (cm) c. millimeter (mm) d. micrometer (mm) e. nanometer (nm)
Viruses and bacteria were first cultured in the laboratory at about the same time.
Answer the following statement true (T) or false (F)
The appearance of lungs was a(n) ____ that drove the evolution of land vertebrates
a. key innovation b. fixed trait c. inbred trait d. clade e. stabilizing allele
Which of the following types of cell cleavage is found most often for deuterostomes?
a. radial, indeterminate cleavage b. spiral, determinate cleavage c. radial, determinate cleavage d. spiral, indeterminate cleavage