Responsible ranching is important to the health of riparian zones because ________
a. cattle movement inadvertently aids plant reproduction in riparian zones
b. a few head of cattle can destroy a riparian zone if allowed to graze there without control
c. around 70% of endemic species live in riparian zones
d. cattle rely on the riparian zones for food and water
b
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If you were given a large showy flower with three petals, six stamens, and three carpels, would you consider it likely to be
A. a monocot. B. a eudicot. C. a hybrid. D. Amborella trichopoda. E. a gymnosperm.
Groups of bacteria living together in a close
knit group are also known as a. eukaryotes. b. all pathogenic bacteria. c. monophylogenic cultures. d. biofilms. e. all of these
What does the term "functional group" mean in reference to the structure of organic molecules?
Identify two types of functional groups and describe their chemical properties.What will be an ideal response?
The first genetic material on Earth was probably _____
A) DNA produced by reverse transcriptase from abiotically produced RNA B) DNA molecules whose information was transcribed to RNA and later translated in polypeptides C) self-replicating RNA molecules D) oligopeptides located within protobionts