Chapter 17 Environmental Hazards and Human Health

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 ____.

• automobile exhaust

• airplane exhaust

• mercury-rich plants

• human activities

• waste from livestock

Tags

NGSS.MS-ESS3-4

The probability of suffering harm from a hazard that can cause injury, disease, death, economic loss, or damage is referred to as ____.

• negligence

• exposure

• peril

• dangerous

• risk

Tags

NGSS.MS-ESS3-2

Which of the following is considered a biological hazard?

• disease-carrying pathogens

• smoking cigarettes

• drinking too much alcohol

• natural flooding

• unsafe working conditions

Which of the following is considered a natural hazard?

• driving

• earthquakes

• poverty

• poor nutrition

• infectious diseases

Tags

NGSS.MS-ESS3-2

Which of the following is considered a cultural hazard?

• smoking cigarettes

• contagious viruses

• having unsafe sex

• earthquakes

• unsafe working conditions

Toxicity is rated according to the amount of a substance that is necessary to kill 50% of humans, given in milligrams per kilogram of body weight. A rating of supertoxic has an LD50 of ____.

• less than 5 mg/kg

• 5-50 mg/kg

• 50-500 mg/kg

• 500-5000 mg/kg

• 5000-15000 mg/kg

Tags

NGSS.MS-PS1-2

Which of the following is a non-transmissible disease?

• diabetes

• influenza

• hepatitis B

• tuberculosis

• HIV

Tuberculosis is caused by ____.

• mosquitoes

• flies

• viruses

• bacteria

• protozoa

What is a transmissible disease?

• A disease caused by something other than a living organism

• A disease that does not spread from one person to another

• A disease that can be passed from one person to another

• A disease caused by cancer

• A disease that will always lead to death

Which viral disease has killed the most people?

• tuberculosis

• HIV/AIDS

• hepatitis B

• influenza

• West Nile