Straight-chain oils are called:
a. aliphatic hydrocarbons.
b. aromatic hydrocarbons.
c. mixed hydrocarbons.
d. ethyl oils.
e. aromatic oils.
A
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Lignin is a complex polymer of methoxylated ________ compounds and is present in ________
A) silica / aquatic environments B) mineral / rocks C) oil / fossil fuels D) aromatic / vascular plant material
What biological technique has provided evidence in establishing the eukaryotic superkingdoms?
A. molecular sequence comparisons B. bacterial culturing C. the identification of land plants D. visualizing cell shape
Statistical associations, biologic credibility, sequence of events, and consistency among studies are all ways epidemiologists establish casual associates
a. true b. false
Plasmodium reproduces by binary fission.
Answer the following statement true (T) or false (F)