Which of the following is not an example of matter?
A) the air in your lungs
B) the blood in your arteries
C) the sunlight coming through the window
D) None, all of these are matter.
C
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The principal of limiting factor states that survival, growth, and _____ of a species in an ecosystem are determined by the critical resource in least supply.
Fill in the blank(s) with the appropriate word(s).
The ________ of phytoplankton and zooplankton contribute to marine sediments.
A. tests B. fecal pellets and tests C. fecal pellets D. limbs E. tests and limbs
In a fractionating tower, the crude oil vapors pass from a pipe still into the column. Tar and lubricating stock are the first components to be pulled off at the bottom
Nearer the top kerosene is pulled off followed by gasoline and finally natural gas at the very top. From this information, which has a higher boiling point, gasoline or kerosine? A) Gasoline has the higher boiling point. B) Kerosene has the higher boiling point. C) Their boiling points are the same, but kerosene has the greater density. D) Fractional distillation components are pulled off based on molecular weight, so it is not possible to know which has the higher boiling point from the information given.
Which of the following occurred during the post-Soviet era of development?
A) an emphasis on oil and natural gas exports B) the creation of the Volga-Don Canal C) the completion of the BAM railroad link across Siberia D) a massive emphasis on clear-cutting of taiga forests to increase wood exports E) steel industry development