APES Lap 3 Quizlet

which of these is not a type of marine ecosystem

mountain stream

A family of five recently replaced its 5-gallon-per-minute showerheads with water-saving 2-gallon-per-minute showerheads. Each memeber of the family averages 8 minutes in the shower per day. In a 30-day period, how many fewer gallons of water will the family use the new showerheads?

3600

Step P: water is passed through a screen. Step Q: pathogenic organisms are killed by chlorination, UV, or ozone. Step R: suspended particles clump and settle out. Step S: a floccing agent, such as alum, is added to the water. The processes described above are steps in the purification and treatment of municipal wastewater. The steps are listed in random order. What is the correct order?

P S R Q

Requires minimum safety standards for community water supplies

Safe water drinking act

which of the following is not included in a water footprint

a waterfall in a recreational area

Which of the following inorganic substances is naturally occurring in rocks, soluble in groundwater, and toxic at low concentrations

arsenic

which of the following is a successful solution to the problem of fish mortality caused by dams

building fish ladders around the dam

benefits of artificial wetlands

can treat waste water, manage pollution/run off from a city, provide a recreational area

Human wastewater entering into bodies of water can be dangerous because

causes increase in biological oxygen demand, can lead to cultural eutrophication, the wastewater can carry pathogens

effects of ocean acidification

decay of shells of marine life, certain coral cannot survive

As urbanization increases and natural soil surfaces are covered, the groundwater supply is reduced due to

decreased surface runoff

which is the best example of a point source of water pollution

factory effluent

true/false: ocean currents are always rapid and powerful

false

which of the following displays eutrophication on a large scale

gulf of mexico

cause of ocean acidification

increased levels of H2CO3 in the atmosphere leads to a decreased ocean pH

in a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point source input of organic matter into the river. this effect is due to

increasing bacterial activity as organic matter decays

the use of tidal and wave energy as a renewable energy source involves converting __________ energy to electricity

kinetic

which of the following is a measure of the amount of suspended material in water

leachate concentration

The major biological source of dissolved oxygen in the ocean comes from

photosynthesis by phytoplakton

which of the following is most likely to increase both nutrient levels and bacterial content of lake water

runoff from a nearby hog farm

Waste from which of the following is an example of a nonpoint source of water pollution?

runoff from agricultural fields

Overuse of groundwater in coastal areas would most likely result in

saltwater intrusion

Why did the DO after one week decrease as the amount of waste increased?

the carbon dioxide increased due to algal respiration

ocean temperatures are much more stable than temperatures on land. this is explained by:

the high heat capacity of water

The presence of fecal coliform bacteria in a sample of river water suggests which of the following?

the water is contaminated with animal waste

which is true of sewage treatment plants in the United States

they are not designed to remove pharmaceutical chemicals from wastewater