How is the growth rate of a population determined?
A. birthrate minus death rate
B. birthrate divided by death rate
C. death rate
D. birthrate times death rate
E. birthrate
Answer: A
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Hypotheses that are falsifiable fall within the realm of:
a. science. b. history. c. not science. d. philosophy. e. English.
Roots contain starch-heavy plastids known as
A. chloroplasts. B. plastoplasts. C. statoliths. D. strongoliths. E. chromoplasts.
Which of the following observations were an outcome of studies by David Tilman and coworkers at Cedar Creek, Minnesota on ecosystem stability? Check all that apply.
_____ Plots with more species showed less year-to-year variation in biomass. _____ Species-rich plots were less affected by drought than species-poor plots. _____ Over-yielding was observed in more recent work at Cedar Creek. _____ Nitrogen uptake and total biomass produced were negatively correlated to species richness. _____ More diverse plots were less susceptible to invasion by new species.
The products of the process in Figure 3-1 are:a
amino acids. b. molecules of glycerol. c. representative of a glycoside linkage. d. enzymes. e. monosaccharides