Pure culture technique utilizing dilute suspensions of microorganisms which are added to melted and cooled agar.
What will be an ideal response?
pour plate method
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A mass extinction is defined as
a. the permanent loss of major groups of organisms. b. the loss of 20% of a population. c. the rapid growth of species diversity in a particular area. d. the temporary loss of major groups of organisms. e. all of these.
All food chains begin with a
A. herbivore. B. carnivore. C. producer. D. decomposer.
Scientists were studying temperature selection among pregnant big brown bats. What would the treatment group be in this experiment?
What will be an ideal response?
Which step is not involved with constructing a representative sample?
A. Collect the sample by randomly sampling from each stratum (defined by your pre-chosen independent variables). B. Run a t-test to check if the outcomes are different across stratums. C. Use information about the population to stratify (categorize) each of the chosen variables. D. Choose the independent variables you want to match.