Exam 14: Environmental Hazards and Human Health

Since the AIDS virus has reduced life expectancy in some sub-Saharan African countries by as much as 20 years, the result is that some countries, such as Botswana and Zimbabwe, will each lose half of their adult population within a decade. a.Briefly discuss the implications of this tragedy.

Some individuals are sensitive to a multitude of toxins, a condition called ____________________.

List the reasons that we tend to evaluate risks inappropriately.

DDT is a chemical that is persistent, or resistant to breakdown.

____________________ gives an estimate of the likelihood that an event will occur.

PCBs-methyl mercury, arsenic, and lead-are all examples of ____________________.

Bisphenol A (BPA) is an estrogen mimic used in the production of hardened plastic products. a.This chemical is a problem when

Malaria is spread by

In 2006, the World Health Organization (WHO) recommended the use of ____________________ to control the spread of malaria.

About ____ of the world's people are at risk from malaria.

Match the items below with their correct description from the list a through f. -nerve gas

Effectively combating the spread of malaria has become more challenging since the 1970s because:

These diseases are the three largest viral killers.

A(n) ____________________ effect is an immediate or rapid reaction to exposure to a harmful substance.

The overuse of ____________________ can cause bacteria to develop immunity.

Match the items below with their correct description from the list a through f. -DDT

Which of the following tools includes the other three?

Common antimalarial drugs have become more effective against the Plasmodium parasites since about 1970.

Explain why infants and children are more susceptible to the effects of toxic substances than adults are.

____ is the scientific process of using statistical methods to estimate how much harm a particular hazard can cause to human health or the environment.