Much of the world’s coal reserves were formed from the buried remains of ____, the dominant plants of the
Carboniferous period.
a. bryophytes
b. seedless vascular plants
c. gymnosperms
d. angiosperms
e. gymnosperms and angiosperms
ANSWER: b
Biology & Microbiology
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Is Nakano's quote from Science consistent with the textbook's claim that RNA is a good candidate for the first life form?
A) yes B) no
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The male gametophyte becomes
a. ovules. b. seeds. c. pollen grains. d. cones. e. sperm cells.
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Antibody binding to receptors on the thyroid may result in
A. multiple sclerosis. B. Graves' disease. C. DiGeorge syndrome. D. type I diabetes. E. autoimmune hemolytic anemia.
Biology & Microbiology
There are a few places in the United States that use ozone or peroxide for final disinfection of water.
Answer the following statement true (T) or false (F)
Biology & Microbiology