Cambridge Environmental

Which test indicates that dangerous bacteria and pathogens are likely present?

• fecal coliform

• turbitity

• pH

• nitrate/nitrites

This federal law regulates point source pollution; provides funding for sewage treatment plants

• is not regulated in US

• U.S. Marine anti-pollution Control Act

• the Clean Water Act

• the Safe Drinking Water Act

A new golf course is built next to a river. Over the past several months, the nitrate levels of the water in the river have been increasing. Which best explains the cause of the increasing nitrate levels?

• increased growth of algae

• decreased biodiversity

• runoff from fertilizer

Overpumping groundwater in coastal areas can cause ________ to move into aquifers, making the water undrinkable.

• suspended solids

• hard water ions

• untreated sewage

• saltwater

Tags

NGSS.MS-ESS2-4

Which of the following is an effect of excess fertilizer washing into streams and lakes?

• the pH is too low for plants and animals

• cooler water holds more oxygen

• increased sediment reduces oxygen

• algae "blooms", leading to lower oxygen

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

In industrial water use, what is most of it used for?

• Toilets

• Cooling power plants

• Making goods

• Waste disposal

Which of the following describe the relationship between D.O. and B.O.D.?

• When D.O. decreases, the B.O.D. decreases

• When D.O. decreases, the B.O.D. increases

• When B.O.D. decreases, the D.O. decreases

• When B.O.D. increases, the D.O. decreases

Tags

NGSS.HS-LS2-3

Increased use of inorganic (lab-made) fertilizers on crops contributes to:

• Hypoxia in the Gulf of Mexico

• Increase in storm severity in southeastern U.S.

• Water shortages in California

• Saltwater intrusion on the East Coast.

• Increase levels of Mercury in Tuna

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Which pollutant or pollutants are most likely to create eutrophic areas?

• nitrates and phosphates

• heavy metals

• synthetic organic compounds

• pharmaceuticals

• Acid deposition

Tags

NGSS.MS-LS2-3

Use of bacteria to clean up a pollutant such as gasoline is known as:

• Primary treatment

• Secondary treatment

• nanotechnology

• bioremediation