Human Health and Epidemiology Environmental Science

What percentage of commercial chemicals have been tested for toxicity?

• 10

• 30

• 50

• 90

What is the main defense against viral diseases?

• Antibiotics

• Pesticides

• Vaccination

• Epidemiology

All of the following are natural sources of pollution except

• lead

• dust

• volcanoes

• burning fuels

Pathogens can be spread by

• breathing contaminated air.

• drinking contaminated water

• secondary hosts.

• All of the above.

Which of the following is an emerging virus?

• measles

• diphtheria

• Dengue fever

• Schistosomiasis

What is the difference between pollution from natural sources and pollution from human activities?

• Naturally occurring pollutants are less toxic.

• Pollution from human activities has not been researched.

• Pollution from human activities can be predicted and controlled.

• Naturally occurring pollutants are only hazardous in small dosages

Tags

NGSS.HS-LS2-7

_________________ is the vector that may spread disease such as malaria or Dengue infection.

• Rodents

• Mosquitoes

• Humans

• Water

Which of the following statements is correct?

• Landfills solved pollution problems caused by waste disposal.

• Wastewater from cities no longer carries toxic chemicals into waterways.

• Laws regulating waste disposal have put an end to pollution problems caused by wastes.

• Much of the pollution in our environment is a byproduct of inadequate waste disposal.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

Toxicology is used to determine

• the classification of a pathogen.

• the vectors of a disease.

• how poisonous a substance is.

• what emerging viruses cause disease.

Which of the following substances is a heavy metal, pollutant that is associated with nerve damage?

• organophosphates

• PCBs

• lead

• hormones