The variables that investigators try to keep the same for both the experimental and the control groups are

a. independent.
b. controlled.
c. dependent.
d. a and c.


d

Biology & Microbiology

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The light-harvesting pigments in Bacteria are classified as bacteriochlorophylls

Indicate whether the statement is true or false.

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Bdellovibrio

A. prey on other bacteria. B. are parasites of plants. C. may fix nitrogen. D. are photosynthetic.

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In which demographic model is population

growth the fastest?

a. pre-industrial b. transitional c. industrial d. postindustrial e. transformational

Biology & Microbiology

What is the specialized branch of mathematics that is used to compare data?

A) epidemiology B) computational mathematics C) cross-sectional mathematics D) statistics

Biology & Microbiology