Circling the globe at northern latitudes is ________, with coniferous trees and long, cold winters.
A. chaparral
B. tundra
C. taiga
D. temperate deciduous forests
Answer: C
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Choose the description below that best matches the current model of RNA polymerase holoenzyme.
A. A core enzyme composed of five sigma factors bound by a polypeptide chain. B. A core enzyme composed of five polypeptides bound by ribosomes. C. An open complex or "bubble" formed by DNA, mRNA, and RNA polymerase. D. A core enzyme composed of five polypeptides bound by a transcription factor.
The animal group with the highest biodiversity in the Amazon basin is
a. amphibians. b. birds. c. insects. d. mammals.
A(n) ________ is a group of similar cells that perform the same function
Fill in the blank(s) with correct word
Tinbergen is credited with founding the field of behavioral ________, the study of how natural selection shapes behavior.
A. symptomatology B. genetics C. demographics D. ecology