PEOPLE AND EARTH'S ECOSYSTEM QUIZ

What is the effect of water pollution on the food chain?

• Enhances the food chain

• Disrupts the food chain

• 
  Improves the food chain

• No effect on the food chain

What is the term for an area of land in which all inland waters drain into the same larger body of water?

• Water cycle

• 
  Lake

• Watershed

• River

What is the process called when farming activities add excess fertilizers to rivers and lakes?

• Water conservation

• Fish kills

• Eutrophication

• Red Tide

What is the effect of water pollution on aquatic life?

• Enhances metabolism

• No effect

• Improves behavior

• Causes illness and eventual death

What is the composition of water molecules?

• Two atoms of oxygen

• One atom of oxygen and one atom of hydrogen

• One atom of hydrogen

• Two atoms of hydrogen and one atom of oxygen

What percentage of water on Earth is freshwater?

• 
  50%

• 
  2.5%

• 
  70%

• 
  97.5%

Why are pesticides considered a greater threat to children than adults?

• Children's bodies are more sensitive to pesticides

• 
  Adults consume more pesticides intentionally

• Children have less exposure to contaminated areas

• Adults are more likely to play in contaminated areas

What is the purpose of risk management in environmental health hazards?

• To increase risks

• To identify, assess, and reduce risks

• To ignore risks

• To create more risks

What is the Stockholm Convention on Persistent Organic Pollutants focused on?

• Banning all pollutants

• Protecting human health from 12 toxic pollutants

• Promoting the use of toxic pollutants

• Ignoring the impact of pollutants

How is the toxicity of a pollutant assessed?

• By the dose at which adverse effects are produced

• By the weight of the pollutant

• By the color of the pollutant

• By the smell of the pollutant