Unit 8 Review

Water Pollution threatens wildlife but not the health of human beings.

• true

• false

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Eutrophication is a condition in an aquatic ecosystem where high nutrient concentrations stimulate blooms of algae

• true

• false

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The introduction of chemical, physical, or biological agents into water degrade the water quality is known as Superfund.

• true

• false

Disease-causing bacteria, viruses, and parasitic creatures that contaminate a water supply are known as algal blooms

• true

• false

Tags

NGSS.MS-LS2-4

What is the purpose of adding chlorine to water during the water treatment process?

• to filter and remove large debris

• it starts flocculation

• to kill bacteria as well as prevent future bacterial growth

• remove unwanted gases

Which of the following represents non-point source pollution?

• unlined landfill

• polluted wastewater from a chemical plant

• leaking oil tanker (ship)

• runoff from agricultural fields

Most of the pollutants in the ocean come from:

• commercial boats and personal watercraft

• spills from oil tankers

• activities on land

• leaking underground storage facillities

Some communities have banned detergents containing high levels of phosphates because

• they cause chemical reactions that raise the temperature of river and lake water

• they are not efficient cleaners

• excessive phosphates in lakes may begin the process of eutrophication

• they kill algae and disrupt normal food webs in lakes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

a common feature of thermal pollution and eutrophication is that they both

• have sources that are difficult to identify and control

• lead to increases in fish populations

• are a result of power plants and other industrial activity

• decrease the amount of (dissolved) oxygen in water

Tags

NGSS.HS-ESS2-5

NGSS.HS-LS2-6

NGSS.HS-LS2-7

Which items make up the largest percentage of waste produced by households and businesses?

• aluminum cans

• plastic bottles and packaging

• paper products

• yard waste, such as grass clipping s and tree limbs