Which of the following is an organic chemical water pollutant?
A. cyanide
B. pesticides
C. heavy metals
D. chloride ions
Ans: B. pesticides
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The most plausible explanation for the high number of spiders in plot 4 is:
A. there are too many flies overall. B. there are no centipedes to prey on the spiders and there are abundant flies upon which to feed. C. the spiders preyed on the centipedes and ignored the flies. D. the flies and spiders worked together to eliminate the centipedes.
Interpret the pedigree in the accompanying figure by describing each symbol and number. How might the information from this pedigree be used by clinicians and researchers? What will be an ideal response?
The ?-helix and ?-pleated sheet are examples of which level of protein structure?
A. primary B. secondary C. tertiary D. quaternary
What are the function of the hydrochloric acid produced by the stomach
What will be an ideal response?