The concentration of nutrients in estuaries causes____ productivity
a. extremely low
b. low
c. average
d. medium
e. high
E
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Ghost crabs predominate in:
a. sandy supratidal. b. sandy intertidal. c. sandy subtidal. d. rocky shores. e. splash zones.
With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and
allowed mammals the opportunity to evolve and exploit those niches. This is an example of ____.
a. sympatric speciation b. adaptive radiation c. phylogeny d. reproductive isolation e. phylogenetic isolation
Which term best describes an organism that has a minimum growth temperature of -4oC, an optimum temperature of 10oC and a maximum temperature of 24oC?
a. psycrotroph b. mesophile c. psychrophile d. thermophile e. extremophile
The unequal sharing of electrons within a water molecule makes the water molecule _________
a) have a low surface tension b) ionic c) hydrophobic d) polar e) change easily from a liquid to gaseous form