Seasonal variation in solar radiation, temperature, and day length is due to the
A) tilt of the Earth's axis.
B) greenhouse effect.
C) Coriolis effect caused by the spinning of Earth on its axis.
D) sunspot activities at the surface of the Sun.
A
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Which of the following would be used by a chemoorganotroph for energy?
A) C2H3O2- B) H2 C) CO2 D) H+
This image is an example of _____
1.a haploid gametophyte stage of red algae
2.a heterotrophic water mold
3.a freshwater diatom
4.one ciliate preying upon another
If a membrane is relatively impermeable to a particular solute that dissolves in water, then water can cross the membrane in the direction of the solute by means of _____
Fill in the blank(s) with the appropriate word(s).
Bergey's Manual contains
A) classification schemes for prokaryotes. B) treatments for bacterial diseases. C) recipes for bacterial growth media. D) genetic sequences of prokaryotes. E) rules for naming new bacterial species.