Terrestrial ecosystems are grouped into biomes primarily on the basis of __________.
Fill in the blank(s) with the appropriate word(s).
Answer: vegetation type
Biology & Microbiology
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What percentage of the species that have inhabited the Earth are extinct?
a. 15% b. 50% c. 35% d. 99% e. 85%
Biology & Microbiology
In a population of rabbits, some evolve the
ability to outrun foxes. This is an example of ____ selection.
a. directional b. stabilizing c. disruptive d. mutational e. restricted
Biology & Microbiology
All of the following are specialized epidermal cells EXCEPT
A. trichomes. B. root hairs. C. guard cells. D. collenchyma.
Biology & Microbiology
Algal blooms often occur when which nutrients accumulate in the water?
A) Mercury and sulfur B) Potassium and sodium C) Copper and iron D) Phosphorous and nitrogen
Biology & Microbiology