Speciation:a
maintains an intermediate phenotype in a stable environment.
b. is the formation of a new species from an ancestral population.
c. only occurs when a population is geographically isolated.
d. is a change in allele frequencies in a population.
e. is the end result of macroevolution but not microevolution.
B
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The oxygen production measured in the experiments of this exercise
(a) is a consequence of the breakdown of hydrogen peroxide. (b) is an index of enzyme activity. (c) may depend on pH, temperature, or enzyme concentration. (d) is all of the above.
It takes one calorie of heat to raise the temperature of one gram of water one degree Celsius at sea level. This is referred to as the ____ of water
a. specific heat b. heat of fusion c. homeostasis d. vaporization e. heat of transformation
What is true about the genus Sphagnum?
A) It is an economically important liverwort. B) It grows in extensive mats in grassland areas. C) It accumulates to form coal and is burned as a fuel. D) It is an important carbon sink, reducing atmospheric carbon dioxide.
The group ________ includes brown algae and diatoms
Fill in the blank(s) with correct word