Zooplankton populations in Lake Erie and the Hudson River have declined by up to 70% since the arrival of zebra mussels because ________
A) waste from zebra mussels promotes bacterial growth that kills zooplankton
B) zebra mussels carry a parasite that kills zooplankton
C) zebra mussels feed on phytoplankton, which zooplankton need as a food source
D) zebra mussels prey exclusively on zooplankton
E) zebra mussels block sunlight penetration into lakes and thus prevent zooplankton from photosynthesizing
C
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What is a typical range of pore sizes in rock?
A) 5 micrometers to 100 micrometers B) 0.1 millimeter to 0.8 millimeter C) 0.1 millimeter to 3 centimeters D) 10 millimeters to 5 centimeters
An anode and a cathode are found ________
A) at the opposite ends of the pathway for water flowing through a hydroelectric dam B) in the heat exchange apparatus of a geothermal unit C) on the opposite sides of a battery D) in a wind turbine
It takes 1 calorie to raise 1 gram of water 1°C
Indicate whether the statement is true or false
Channels that add their flow to a trunk stream are called _______________
Fill in the blank(s) with correct word