The salinity of seawater at the equator is:
a. high due to evaporation.
b. low due to precipitation.
c. high due to freezing.
d. low due to river input.
B
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If the size of a cell doubles what will be the
surface area to volume ratio?
a. 8 to 4 b. 4 to 8 c. 16 to 4 d. 16 to 8 e. 64 to 16
The first land animals were probably the:a
arthropods. b. amphibians. c. reptiles. d. mammals. e. dinosaurs.
The regulation of eukaryotic gene expression is ________, allowing a relatively small number of different DNA control elements and transcription
factors to establish highly specific and precisely controlled patterns of gene expression by acting in different combinations in different cell types. Fill in the blank with correct word.
Which of the following would be a primary consumer?
A. tree B. decomposer C. carnivore D. herbivore