In a manipulative experiment ________
A) the motive is economic gain, so scientists manipulate the data
B) replication of the experiment is not necessary
C) researchers manipulate the independent variable
D) researchers manipulate as many variables as possible
E) the peer review process is bypassed
C
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The meteorologist at your local TV station says "There is a 60% chance of rain tomorrow." This is an example of
A) numerical weather forecasting. B) forecast bias. C) a qualitative forecast. D) a probability forecast.
The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the answers below to the number on the diagram.
Match the lettered answer to number 8 on the diagram.
A. Respiration B. Photosynthesis C. Rock formation D. Decay E. Fossil fuel formation
Metamorphism that occurs over broad areas when the pressure and associated heat of overlaying rocks or other tectonic forces cause the rocks to undergo deformation is known as
A) clastic metamorphism. B) intrusive metamorphism. C) contact metamorphism. D) regional metamorphism. E) extrusive metamorphism.
Zooplankton populations in Lake Erie and the Hudson River have declined by up to 70% or more since the arrival of zebra mussels because ________
A) zebra mussels prey on zooplankton B) zebra mussels block sunlight penetration into lakes and thus prevent zooplankton from photosynthesizing C) zebra mussels carry a parasite that kills zooplankton D) waste from zebra mussels promotes bacterial growth that kills zooplankton E) zebra mussels feed on cyanobacteria, which zooplankton need as a food source