Exam 17: Environmental Hazards and Human Health

A substance's resistance to breakdown is its ____________________.

A nontransmissible disease is caused by something other than a living organism.

What is an immediate or rapid harmful reaction to exposure to a chemical,ranging from dizziness to death?

A person experiencing liver damage after a lifetime of alcohol abuse is illustrating ____.

The ____________________ consists of specialized cells and tissues that protect the body against disease and harmful substances by forming antibodies.

About one-third of the toxic metal,mercury (Hg),is released into the air from natural sources,such as rocks,soil,volcanoes,and the ocean.The remaining two-thirds comes from ____.

In terms of number of premature deaths per year and reduced life span,what is by far the greatest risk?

Why do scientists use dose-response curves?

What is risk analysis,and how might an evaluator perform a risk analysis?

Natural and synthetic chemicals in the environment that can harm the human nervous system are called ____.

____________________ is a measure of the harmfulness of a substance;that is,its ability to cause injury,illness,or death to a living organism.

For people who do not take anti-viral drugs,it takes an average of three to five years for an HIV infection to progress to AIDS.

Use the hypothetical dose-response curve above to answer the question(s) below. -Based on the accompanying graph,what is the hypothetical median lethal dose (LD50)?

The term ____________________ refers to the probability of suffering harm from a hazard that can cause injury,disease,death,economic loss,or damage.

We risk falling behind in our efforts to prevent infectious bacterial diseases with the use of antibiotics because of the ____.

Which of the following is considered a biological hazard?

____________________involves deciding whether or how to reduce a particular risk to a certain level and at what cost.

Use the hypothetical dose-response curve above to answer the question(s) below. -Based on the accompanying graph,what percentage of the population would be killed if given a dose of a chemical of 6 (hypothetical units)?

Research indicates that the BPA in plastics can leach into water or food when the plastic is ____.

About one in every ____ people infected with HIV is not aware of the infection.