16.3 - Water Quality

Question 0

_Can put entire freshwater ecosystems at risk

Answer 0

pollution

Question 1

_Pollution affects ecosystems

Answer 1

water

Question 2

_From farms and cities may contain toxic chemicals that disrupt the chemical balance of freshwater lakes and streams

Answer 2

run off

Question 3

overtime lakes and ponds begin to fill in through a process called_

Answer 3

eutrophication

Question 4

away scientist can determine the help of an ecosystem is by the_species, also called_, it is a species that provides signs of the quality of an ecosystem’s condition

Answer 4

1. indicator

2. bioindicator

Question 5

indicator species provide a sign of an ecosystems_

Answer 5

Health

Question 6

what two types of pollutants are there?

Answer 6

water-soluble and fat-soluble

Question 7

what is water-soluble pollutant?

Answer 7

they dissolved in the water, exit through waste

Question 8

what is fat-soluble pollutant?

Answer 8

it stays in the fat of an organism

Question 9

_Causes accumulation of toxins in the food chain

Answer 9

biomagnification

Question 10

_Can move up the food chain

Answer 10

pollutants

Question 11

_eat contaminated prey

Answer 11

predators

Question 12

_Accumulates at each stage of the food chain

Answer 12

pollution

Question 13

_Has the most serious effect on species of the top of the food chain

Answer 13

biomagnification

Question 14

humans can be affected by_

Answer 14

biomagnification

Question 15

is PCB a fat-soluble toxin or a water-soluble toxin?

Answer 15

fat soluble