The pyramid of energy illustrates
a. the first law of thermodynamics.
b. the diminishing of usable energy as it is
transferred through an ecosystem.
c. that energy can be recycled.
d. the biological magnification of materials in
an ecosystem.
e. the diminishing number of organisms at
each trophic level.
B
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True or False: Regardless of profession, knowledge of biology is important for making informed, environmentally responsible choices. (True)
A. true B. false
The study of common evolutionary characteristics shared between organisms is a field of scientific study known as _________.
Fill in the blank(s) with the appropriate word(s).
The atmosphere and seas of the early Earth lacked oxygen. What kind of organisms could NOT have lived under those conditions?
A. chemoautotrophs B. obligate anaerobes C. cyanobacteria D. obligate aerobes E. facultative anaerobes
When similar structures arise indecently in different species, it is called __________________.
A. Convergent evolution B. Divergent evolution C. Mutation D. Vicariance E. Natural selection