A model is used by ecologists to
A) prove how nature works by demonstrating cause-and-effect relationships.
B) analyze data that have been collected during an experiment.
C) make predictions about how nature works using a set of explicit assumptions.
D) observe how nature works in an experimental setting.
C
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Characteristics of genetically engineered plants and plant products include
(a) better nutrition. (b) longer storage lives. (c) resistance to disease and insects. (d) all of the above.
In a nerve cell, the function of the dendrites is to:
a. conduct impulses away from the cell body. b. attach the neuron to connective tissue. c. receive impulses and conduct them to the cell body. d. increase the speed at which nerve impulses are carried away from the cell body. e. support and nourish the neuron.
What is considered to be the primary method of succession in the marine intertidal zone?
A. Mutualism B. Facilitation C. Equilibrium D. Tolerance E. Inhibition
In Figure 3.1, line "c." points to the microscope's
a. Illuminator. b. Condenser. c. Ocular lens. d. Objective lens.