What is a frustule?
A) The by-product of photosynthesis in diatoms
B) The rigid cell wall of a diatom
C) A microscopic phage that attacks diatoms
D) None of these choices
B
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Growing sugar beets for sugar, as an alternative to importing sugar made from sugar cane, is an example of
A) import substitution. B) a quaternary sector activity. C) flexible production. D) vertical disintegration. E) deindustrialization.
Sediments are called ________ when they contain at least ________ biogenous sediments
a. terrigenous; 20% b. oozes; 70% c. terrigenous; 30% d. oozes; 30%
Which data structure stores raster data as a matrix and writes the cell values into a file by row and column?
A. quad tree B. cell by cell C. run length code D. none of these is correct
Cool stars evolve much more quickly than do hot stars
Indicate whether the statement is true or false