Stream discharge calculates:
a. the distance that a water packet can move along the stream in a given period of time
b. the mass of water in stream moving past particular point in a given period of time
c. the volume of water passing through a cross section of the stream in a given period of time
d. the loss of stream water due to evaporation and infiltration
Answer: c. the volume of water passing through a cross section of the stream in a given period of time
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Using the graph pictured below that shows the tons of cod catch in the North Atlantic from 1900 on, match the appropriate letter with the description given
1. What area on the graph represents a slight recovery in the collapsed fishery? 2. What area on the graph represents the point when fishermen began to use bottom trawlers to catch fish? 3. What point on the graph represents the year when 20,000 fishermen and fish processors lost their jobs? 4. What point on the graph represents the fish catch after the use of bottom trawlers was established? 5. At what point on the graph would it have been most beneficial to implement sustainable fishing practices to preserve the cod fishery?
The EPA's original 10,000-year radiation dosage standard for a nuclear repository was changed to how
many years? a. 1,000 years b. 100,000 years c. 1,000,000 years d. 10,000,000 years e. It was not changed. It is still 10,000 years.
A solution with a pH of 3 is ________ a solution with a pH of 5
A) 4 times less acidic B) 4 times more acidic C) twice as acidic D) half as acidic E) 100 times more acidic
Which of the following occur during an uncontrolled fission chain reaction?
A) A heavy nucleus is broken into smaller nuclei B) More protons are produced than are consumed C) both a and b D) neither a nor b