Intertidal soft bottoms are unstable due to:
a. wave action.
b. erosion.
c. changing tides.
d. currents.
e. all of the above.
E
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Instead of being isolated by pure culture, SAR11 was discovered when researchers analyzed the gene sequences contained within seawater samples
A. true B. alse
In meiosis, chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during
A. metaphase II. B. prophase II. C. prophase I. D. interphase II. E. metaphase I.
The kidneys are protected by ____ tissue
a. adipose b. loose irregular connective c. dense regular connective d. stratified cuboidal epithelium e. simple squamous epithelium
The best scientific explanation for differences in structure, function, and behavior found in different species or organisms is provided by
a. carbohydrate electrophoresis b. population chromatography c. the theory of carrying capacity d. the theory of evolution