Ecologists Try to Reduce the Likelihood That Variables That Are

question 53

Multiple Choice

Ecologists try to reduce the likelihood that variables that are not under the control of the experimenter will unduly influence the results of an experiment by

• A) replicating each treatment, including the control.
• B) assigning treatments to subjects or plots methodically.
• C) never performing the same experiment twice, but trying instead to improve each experiment.
• D) carefully setting up experiments so that the results are identical and do not need to be statistically analyzed to prove the result.

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Definitions:

Atomic Monopoly

Refers to a period, particularly after World War II, when a single country (initially the United States) had exclusive knowledge, technology, and capability to produce nuclear weapons.

Fissionable Materials

Substances capable of undergoing fission reactions, used in nuclear reactors and weapons.

Free Trade

An economic policy that allows goods and services to be exchanged across international borders with little to no government tariffs, quotas, subsidies, or prohibitions to inhibit their exchange.

World Economy

The global network of economic activities and interactions among countries, involving trade, investment, finance, and labor, which influence the economic policies and conditions worldwide.