In Recent Years, There Have Been Significant ______ in the Worst

question 88

Short Answer

In recent years, there have been significant ______ in the worst urban environmental problems in the United States.

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Definitions:

PET

Positron Emission Tomography, a type of imaging test that allows doctors to check for diseases in the body by using a special dye containing radioactive tracers.

fMRI

Functional Magnetic Resonance Imaging, a neuroimaging technique that measures brain activity by detecting changes associated with blood flow.

Control Groups

Groups in experiments that do not receive the experimental treatment, allowing researchers to assess the treatment's effect by comparing it against this baseline.

Experimental Groups

Groups in an experiment that receive the treatment or variable being tested, allowing researchers to assess its effects.