What is the difference between an estuary and a salt marsh?
a. Salt marshes are found far from the ocean, while estuaries border the ocean.
b. Salt marshes are not affected by tides, while estuaries are.
c. Salt marshes are dominated by grasses, while estuaries are defined by tidal influence.
d. Salt marshes border the ocean, while estuaries exist in river environments.
e. Salt marshes are affected by tides, while estuaries are not.
ANSWER: c
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A. r-selected. B. K-selected. C. less competitive. D. All of the responses are correct. E. None of the responses is correct.
Which is the correct sequence of steps in the scientific method?
A. form hypothesis - observation - collect data - analyze results - design an experiment B. form hypothesis - observation - design an experiment - collect data - analyze results C. observation - analyze results - draw conclusion - design an experiment - form hypothesis D. observation - form hypothesis - design an experiment - collect data - analyze results E. observation - analyze results - form hypothesis - draw conclusions - design an experiment
During the treatment of a bacterial infection with antibiotic, the yeast Candida can grow out of control and cause a vaginal or intestinal infection. What is the best explanation for fungal infection?
A. There are fewer bacteria present to compete with the yeast. B. Antibiotics are often contaminated with Candida yeast. C. The antibiotic weakens the immune system. D. Bacteria normally digest yeast cells. E. The antibiotic causes mutations in the yeast that give the yeast resistance.
The production of light by an organism is called ____.?
A. autophotoproduction
B. bioluminescence
C. luminarianism
D. autoillumination
E. bioillumination