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Ozone can be ‘good’ or ‘bad’, pending on its source. Tropospheric ozone, typically man-made and a component of photochemical smog, is considered ‘bad’, whereas stratospheric ozone, an essential component that screens out UV radiation in the upper atmosphere, is considered ‘good’.

Which of the following represents a potential indicator of climate change?  [Select the best response.]

Gases and particulates represent the major forms of air contaminants. 

Which of the following does not represent an environmental exposure route?[Select the best response.]

While ocean acidification is reducing the pH of the world’s oceans by approximately 0.05 pH units/year, this rate of change is insignificant.

 Vulnerable populations tend to bear a disproportionate burden from environmental pollution, contamination, and other adverse environmental conditions. 

An odds ratio for children in Community X to develop leukemia is 1.7, relative to data from matched children from Community Z. This odds ratio indicates that: _________________. [Select the best response.]

Environmental monitoring is applicable for: (1) Remediation and restoration programs, AND (2) Ecological risk assessments, AND (3) Regulatory and surveillance programs.

Consider the YouTube video “Walking in Sabina’s Shoes” and the limited access to potable water in many parts of sub-Saharan Africa.   Limited water resources in this story, and in other regions of the world with similar limited water access, also serve as a barrier to education.

Cholera is a severe waterborne disease caused by Vibrio cholerae. The terms endemic, epidemic, and pandemic could all be applied to cholera transmission, depending on the population of interest.