The cloudiness in the eye lens that blocks light on its way to the retina is called a(n) ________
Fill in the blank(s) with correct word
cataract
Biology & Microbiology
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The majority of energy resources taken from the sea are in the form of:
a. coal. b. energy from tides. c. gas and oil. d. energy from waves. e. thermal energy.
Biology & Microbiology
Stem cells show promise for mending damage due to
a. spinal cord injuries. b. Parkinson’s disease. c. muscular dystrophy d. heart attacks. e. all of these.
Biology & Microbiology
Which of the following is only true of RNA, but not DNA?
A. Guanine pairs with cytosine. B. Adenine pairs with uracil. C. The backbone is made up of alternating 5-carbon sugars and phosphate groups. D. It is comprised of nucleotides.
Biology & Microbiology
The best-known extinction during which all dinosaurs died out completely occurred during the ________ time period
Fill in the blank(s) with correct word
Biology & Microbiology