As you saw in "DO or Die", fish are sometimes lost from lakes as eutrophication occurs. Given what you've learned in this lab about why these fish die-offs occur, which of the following might help maintain the entire ecological community as phosphorus concentrations increase?
What will be an ideal response?
Installing aerators that increase the oxygen concentration in the water
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Which of the following province has the greatest annual frequency of hailstones?
A. Ontario B. British Columbia C. New Brunswick D. Alberta
How do fission power plants work?
A) The heat from a nuclear reaction is used to boil water. B) The neutrons from a nuclear reaction undergo fusion with water to produce hydrogen gas, which drives a turbine. C) The electrons from a nuclear reaction are harnessed to produce an electrical current. D) The krypton gas generated in the fission process is used to drive a turbine. E) none of the above
Tides are caused mostly by:
a. the gravitational attraction between the earth and the sun b. the gravitational attraction between the earth and the moon c. the gravitational attraction between the sun and the moon d. the revolution of the earth around the sun
An estimated ________ percent of Earth's evapotranspiration occurs over land
A) 14 B) 20 C) 78 D) 86 E) 97